Turns out my GE7 is from the early 80s and needs the ASA. I don't remember owning the original Boss PSU, but apparently now I do. Might have been a mix up years ago, because these power supplies look very similar
@nickmcfly6 күн бұрын
Thanks James, this did the trick!
@jorgemellooliveira961110 күн бұрын
ótimo vídeo obrigado Jorge Sul do Brasil
@silcoxone29 күн бұрын
Man, I've been banging my head against the wall on a trace elliott 7 band eq I got from Goodwill. Would not come on for nothing! And your advice on the power jack was spot on. I tested the jack, and it wasn't crossing over to let the battery work. Took out the jack and soldered the pads across on the board for a test, and the leds kicked on! Thank you Sir!!!!!
@jamelectronics29 күн бұрын
Excellent!
@jimcastillo8950Ай бұрын
Great troubleshooting.... I subscribed......
@tjmetz2472Ай бұрын
Hey james, I have boss BD-2 as well, in another video you said boss doesn't sell parts anymore, I need to get a new dc power jack for the pedal. I do not know how to find the part number and I wanna make sure I order the right part. Where can I find the right part and or part number? Another concern is the pedal has the revised smaller circuit boards (I bought it brand new inn 2021) and it seems too have a slightly different DC power jack (I could be wrong about it being different), but this is why I wanna make sure I find the right part.
@jimcastillo8950Ай бұрын
Hello James, I never seen the base of the reverb tank like that with wood shims. Are all fender pre cbs reverb tanks like that with the wood and cardboard? thanks for your videos....
@rgallazzi77Ай бұрын
Hi James, thanks for the video! I got a boss equalizer that works when you plug the battery and also sound works when on power source. But the led goes off when at power source and lights on when on battery. Any clue how to fix it? Thanks a lot!
@jamelectronicsАй бұрын
Ensure you are using the correct power supply. The led indicator being dim or not lighting indicates the voltage is low. See the owners manual.
@rgallazzi77Ай бұрын
@@jamelectronics it was an old pedal, fixing the voltage helped the LED to come up. Thank you!
@trenenpierskalla5500Ай бұрын
I have an old Crate B10 xl solid state amp that I’ve been trying to get working again for a couple years. There isn’t any repair places near me and I searched all over online with no luck finding any similar problems like mine. I was playing it and all of a sudden zero audio, not even a hum, the fuse wasn’t blown and it still powers on. I’ve confirmed that the speaker is still good, I can’t see any signs of something that got hot or blew, the jack inputs are making contact and are re-soldered, all of the wiring is good, and it doesn’t even make a sound when I touch the aux jack.
@jamelectronicsАй бұрын
You say you checked the input jacks, but have you cleaned/checked the headphones jack? That jack can cause loss of audio if the normally closed contacts are dirty or not in contact. You could also plug in headphones and see if you have sound in the headphones. If no sound at headphone or line out then, possibly one of the two Integrated Circuit components. Diagnosing those are advanced troubleshooting. Start with the headphone Jack and report back.
@trenenpierskalla5500Ай бұрын
I confirmed that all of the jacks are making contact and there is no sound when I plug in headphones.
@97warlockАй бұрын
Heres MY situation. Peavey XXL head Solid state ..... I kept getting weaker & weaker signal, almost like a bad cord or something .... Swicthed cords , tapped dials, tapped guitar, plugged straight into head with nothing else ... same problem signal getting weaker & woukld eventually come back up. .... Come to find out I had my Amp on 8ohms, but the cabinet is drawing 13.2ohms .so cab SHOULDVE been on 16 but it wasnt, it was on 8ohms. . Thinking I burned up something, plugged patch cable into effects loop on a whim ...........& the amp plays fine. Unplug the cable & it is back to fluctuating up & down again. ......would you still think its the input jacks for the effects loop?????
@jamelectronicsАй бұрын
Sounds like you’ve determined the power amp section is ok. The problem is between the input jack where you plug in your guitar and the effects loop jacks. So, it still could be the effects loop jacks, but could also be any other component in the preamp section. I wish I could tell you where you’re losing signal, but that will take some advanced troubleshooting.
@97warlockАй бұрын
@@jamelectronics unplugged it, flooded the effects loop jacks, plugged the cord in and out 20ish times, floooded some more...... repeated , waited 20 minutes, played it, problem solved. Fixed, thanx to this video.
@cchgnАй бұрын
Mine doesn't have an effects loop, so then what?
@ArrakisOCE2 ай бұрын
Is there an easy way to apply contact cleaner to the pots - without completely dismantling the boards?
@jamelectronics2 ай бұрын
To really get the cleaner into the pot, the board has to be raised. However, you can remove the knobs and spray around the pot shaft and then rotate the pot back and forth. This often lets enough contact cleaner ooze down into the Pot to clear it.
@ArrakisOCE2 ай бұрын
@@jamelectronics Hi James! Thanks a lot for that - I was thinking of trying exactly that first.
@Daniel-kr6px2 ай бұрын
Nice ..just solved my. issues Thanks so much.
@kurtmccracken33942 ай бұрын
You just fixed my Magnatone super 59 sprayed a little cleaner In the loop connections now i’m back to the great sound I know and love thanks
@jamelectronics2 ай бұрын
Glad I could help
@ZMacZ2 ай бұрын
Wrong mindset. Simply grow more and be happy watching the quirrels snack. If plentifull tomatoes they leave some for you. It's like squirrels eat tomatoes, squirrels happy. You watch squirrels snack, you happy. Plant more tomatoes, sell some, ur both happy. If the abundance of squirrels is too great, catch (a few, not all) and sell some, more people happy.
@exnihilo260129 күн бұрын
This is one of the most bizarre comments I've ever seen.
@Malletman123 ай бұрын
My man, you just gained a subscriber. Wow...I've been fighting this one for a couple of days and was getting ready to take it in. Found your video and it's been playing absolutely clean for about 45 minutes now. Thank you!!!
@1southsoon3 ай бұрын
Great demo and info. I love more obscure radios. This one is great. 73. Chris. KC1KWX
3 ай бұрын
Thanks , now I won’t sell it! I’ve put up with it for 27 years! On my Marshall jcm900 50 watt head
@skaboosh3 ай бұрын
cathode current or is plate current better?
@jamelectronics3 ай бұрын
If you’re asking which should be used for amp biasing, you could use either. If you are using a calculator such as tedweber.com, they use cathode current. Someone else’s calculator might use plate current. Cathode current is easier to measure since you are dealing with lower voltages in the cathode circuit. If you measure cathode current but want to know plate current, you can subtract the screen grid current from the cathode current to get the plate current value. To get the screen grid current, measure the voltage drop across the screen grid resistor, divide by the value of the screen grid resistor and there you have it.
@skaboosh3 ай бұрын
@@jamelectronics Yes, thanks so much....I'm slowly learning, I used to bias my amps but years and years ago and perhaps incomplete understanding...thank you for sharing
@iBorsch3 ай бұрын
Hello. I have a Harley Benton GA5 guitar amp into which I would like to build in a spring reverb. Which I'll take from an old Laney PL50 Reverb Can you tell me where to attach it according to the diagram? I want to build it into the body and mix in the sound of reverb.
@mayhem-ish3 ай бұрын
Hey man I have a line 6 amp that when I first plug in my guitar and power it on all the effects and knobs seem like they're turned up way high. I have to turn each knob and then it goes down to a normal tone what do you think that problem could be. Please and thank you
@fonesrphunny72428 күн бұрын
Does the amp have a memory function? It might be loading a preset with everything at 11 and moving the knobs overrides this.
@user-no9qn5gz8w3 ай бұрын
The most critical connection made, from the 2 1k ohms , is absolutely confusing. Did you solder? Exactly where are the 2 resistors soldered to? Jerky video, thumb blocking, and no schematic drawing, pointing, exactly, where all connections are made.
@jamelectronics3 ай бұрын
You are free to move on, my friend.
@user-no9qn5gz8w2 ай бұрын
@@jamelectronics Couldn't seem to take constructive objective critiquing? Hope you will inprove. Moved on nicely, by the way, after doing more research.😑
@jamelectronics2 ай бұрын
@@user-no9qn5gz8w, Bobby, I made this video 7 years ago. I apologize if my video quality is not up to your standards. So sorry about the shakiness, but my intention with my videos is only to give information about things I know about to those that would like to watch. There is the schematic drawing at 1:35 in the video that you said I should have included. As to soldering, it looks plain to me in the video that the connections are soldered but, they can be connected without soldering - it's the viewer's choice. I don't think my finger is blocking anything. The circuit is so simple. Only 2 components and a schematic to show what connects to what. Did you not see the schematic? I watch a lot of DIY videos. When I am doing a project that I need to know how to do, I watch several KZread videos. Some contain all the info I need, and some do not. I never critique someone else's video. They've taken the time to present something they believe will help someone else. I don't have the time and besides what's the purpose- they are not going to make a new video "fixing" the things I have pointed out. They're offering a video, and I can watch or not. By watching multiple ones, I get a very good idea of how to proceed. You "moving on" to do more "research" is a good thing. I'm sure you learned a lot. Good luck on your future pursuits!
@adamjscarborough56003 ай бұрын
Worked for my Ampeg SS-70, thanks!
@MARKANGELOFALCUTILA3 ай бұрын
Can I use it in Bluetooth decoder which has left and right connected to mono amplifier.....when I connect only right and ground it's sounds like...static fm the clarity of music does not clear at all do you think that's the reason
@Andy_Cares3 ай бұрын
Straight forward, to the point with no extra banter...thank you!!
@rauldominguezrivera86754 ай бұрын
Wow! Nothing talk about that!! Thankyou very much!
@robertmethia70804 ай бұрын
trains and ham radio go hand in hand
@dudaudj4 ай бұрын
Problem solved, thank you so much for all information!
@Tonetwisters4 ай бұрын
Some people think it is better to use two tubes that are not perfectly balanced. And I am a fan of 5881's in Fender amps. To my ear, they have a cleaner, tighter bottom end. The current Tung-Sols seem to be good.
@ffej42024 ай бұрын
My Randall rbx500 was having a volume drop issue. Watched this did the cable trick, which worked after some giggling. Really annoying, it's still not 100% reliable, I think I'm going to have to get it removed as I will never use it. Really dumb idea fx loops. Thanks for the video
@jamelectronics4 ай бұрын
You might want to replace both of the effects jacks. But maybe it’s just a cracked solder joint on a jack. Thanks for watching my video!
@BryanClark-gk6ie4 ай бұрын
A tip for you when setting out plants, for example tomato plants. Drive a piece of rebar in the ground beside your plants' take a piece of copper wire and conect it from rebar to rebar in series. Take a car battery and a set of jumper cables and connect the ground to one of the pieces of rebar or the copper wire' take the hot cable and touch it to the copper wire or one of the pieces of rebar for about 5/10 seconds. The worms in the ground will get excited and wiggle around, causing an under ground tillin effect. That will help the roots expand and the plants will grow faster. Most of the worms will come to the top of the ground' you can catch a few and use them to go fishing and have fish and tomato sandwiches.
@RobAndKim4444 ай бұрын
Hi James, thank you for your videos, I'm gonna pass this by you just in case... I have a JCM 2000, English 100w head, (2005 post bias drift), just purchased off the Internet, I just re-tubed it but it still sounds like it has a cool bias setting even though I have it set hot (88mV, Marshall recommends 90), I tried cleaning the effects loop, patching it but to no avail... Something I just noticed is, if I tap on the master volume knob it won't completely mute when I have it on 0, if I keep tapping it goes away (completely mute), and comes back so naturally I stop tapping when it's muted (normal), ever come across anything like this?
@jamelectronics4 ай бұрын
I would use contact cleaner on the volume potentiometer if you haven’t already. Even turning the knob to 10 and back to 0 multiple times will sometimes clear any buildup inside the pot.
@RobAndKim4444 ай бұрын
@@jamelectronics 👍
@RobAndKim4444 ай бұрын
👍
@bryanfarless95795 ай бұрын
Your “yellow” chord solution doesn’t work for my blackstar ht club 50 low volume issue. I can’t run my delay through the effects loop if I’m using your “yellow” chord trick. I never had this low volume issue till I bought a delay pedal and ran it through the effects loop. It’s definitely an effects loop issue. I opened a trouble tkt with Blackstar, no doubt they’ll know what the issue is. I just hope they will to tell me and that it can be fixed. You at least helped me isolate the issue. Thank you.
@bryanfarless95795 ай бұрын
The dirty channel isn’t that good, the clean channel I like and takes distortion pedals real well.
@bryanfarless95794 ай бұрын
Update. I spoke to an local amp repair guy. He explained this cable truck you were talking. I’m using that technique now to see if this rules out my amp or my delay pedal. He said that he has seen where the delay pedal can cause the low volume issue. I’ll follow up.
@bryanfarless95794 ай бұрын
Yes, the dirty channel I dont care for, the clean is a good channel for only one control knob takes my J Rockett Melody pedal real well.
@bryanfarless95794 ай бұрын
It was a bad cable!!!! All good now, thank you!!!!!
@TATAR15 ай бұрын
THANK YOU!
@user-Carolyn-k7e5 ай бұрын
I am going to try this this year. Nothing else has worked for the last 5 yrs.
@jamelectronics5 ай бұрын
I use the Patriot PE-2 Fence Energizer. It’ done the job for me.
@michaelmarchei85395 ай бұрын
Skull yeah hoss 1!1!-
@aussiecue5 ай бұрын
Solved my problem too. Thanks James. Was trying to get two old Boss peddles to work from a multi power supply. It has 8 x 9V and 2 x switchable 9-12-18V. Guess which two suddenly made them work on 12V,,, Here was me thinking I need to replace an CE-2 and a DM-3
@jcalzada746 ай бұрын
can i do the same cable patch method on the power amp input and output.?? ...Edited comment well i did the patch on the effects loops i just bought an ampeg VH-140C for 100 bucks the owner stated on the sale add the volume cut off i tell him I'll take it maybe i can fix it i did a throughly clean-up but the problems did not get fixed with the volume cutting off on the high and low channel even one of the speakers wasn't getting signal out weird that i use a effects modeler on the efffect loop input and i switch it to preamp input to and it work fine i was watching videos about fx loop and came across this one and i did exactly this i patch the effects loops and voila problem fixed thank you very much
@elomars126 ай бұрын
I planned my whole weekend around the repair of my amp and it was this easy fix, thank you
@domioib57456 ай бұрын
Contact cleaner is my new best friend , thanks, you just save me a visit to the tech !!
@alano28756 ай бұрын
Great video. I have a Crate XT15R...got off Craigslist free came with free Japanese LP with broken headstock. Repaired guitar...re-strung...Amp only worked through headphones. :( After watching your video, I removed the amp from the case and was able to clean the contacts in headphone and speaker jacks (I used some tweezers to wiggle and drag thin strip of fine sandpaper between the contacts). Works like new! Video inspired me to get at the jacks!
@jamelectronics6 ай бұрын
Great!
@hansonlife94656 ай бұрын
@@jamelectronicswhen using a non-contact voltage detector, the wires coming from my power switch to the fuse box at the back there are hot. The red and green wires coming out get nothing. Does that suggest an issue with the fuse(s)? I don’t see an easy way to replace them on this unit. (Crate gfx15 looks really similar to your on the inside) Any experience with this?
@jamelectronics6 ай бұрын
There are 3 wires coming into the amp from the power cord. The "hot" wire goes to the on/off switch and then to the transformer. The transformer is mounted on the back of the chassis (could this be what you think is a fuse block?). The 2nd wire goes straight to the transformer and is the Neutral wire. It will not show any voltage with your probe. The 3rd wire is a ground and is terminated directly to the chassis and is a safety ground and obviously has no voltage. I don't believe there is a fuse in your amp. Not sure what your issue is with the amp, but I hope this helps.
@alano28756 ай бұрын
You might have replied to my comment by accident...
@hansonlife94656 ай бұрын
@@jamelectronics oh I think what I was calling a fuse box is the transformer. So, should the red and green wires coming out the bottom going to the board be hot?
@koz.b17416 ай бұрын
i wonder if i can use it safely mono out to stereo input.
@jamelectronics6 ай бұрын
You can use it to split a mono input into 2 mono outs but this won’t give you “stereo”, it will give you 2 identical mono signals.
@worshipfrvr7 ай бұрын
Nice harvest! Congrats!!
@Hendrix77SRV7 ай бұрын
Thank you so much for this video!! I've spent months trying to figure out what could be the issue and finally it worked like magic! I was just about ready to throw my amp out the window as the local tech could not remedy it. Thank you!!
@brothermine22927 ай бұрын
What if the volume fade-out is NOT solved by the patch cable from Preamp Out to Poweramp In? My brother has a Peavey Artist VT hybrid combo amp and it's volume always drops about 30 dB after it's been operating for about 10 minutes. It does the same fading when the Preamp Out of a second (good) amp is cabled to the sick amp's Poweramp In jack... a setup intended to test the sick amp's poweramp module. (Note: The Preamp Out jack of the sick amp was also cabled to the Poweramp In of the good amp during this test, but that pair wasn't being driven by the input signal.) Does this imply the jacks' internal connectors are NOT responsible for the fading? The four output tubes appear to glow orange as steadily after the volume fades as before. If the fadeout might be tube-related, could that be tested by removing two of the four tubes? And then reinstalling those two and removing the other two? Or does the amp require all four tubes to be present to work at all?
@MetalForLife19707 ай бұрын
So how do you run effects pedals into the effects loop if you go with the second remedy of plugging a mono/guitar cable into the send/return ports? Was always told to run distortion/overdrive through the main input jack and any effects like delay/reverb through the effects loop.
@jamelectronics7 ай бұрын
The problem described only occurs when nothing is plugged into the effects loop jacks. If you’re using the effects loop with pedals and having a problem, it’s probably something else.
@MetalForLife19707 ай бұрын
@jamelectronics It's weird...I power up my amp and it just cuts in and out. It's very muffled when cutting out. Gonna try some contact cleaner first I guess
@DonaldMerrit7 ай бұрын
Thank you for the tip I am having this problem I hope it works
@stevenmcc60527 ай бұрын
James what is SW called. How to get it? Do you need hardware to do the interface to laptop?
@jamelectronics6 ай бұрын
The software can be obtained from this website: wsjt.sourceforge.io/wsjtx.html or google WSJT-X Use ARRL.org QST articles as to how to set up or google FT8 and find lots of videos and info on how to do it. I use a SignaLink USB device to connect radio to PC. You can do it! Have fun!
@joonasvareenmusiikki7 ай бұрын
Very informative and interesting. Thank you. Subscribed!
Пікірлер
Turns out my GE7 is from the early 80s and needs the ASA. I don't remember owning the original Boss PSU, but apparently now I do. Might have been a mix up years ago, because these power supplies look very similar
Thanks James, this did the trick!
ótimo vídeo obrigado Jorge Sul do Brasil
Man, I've been banging my head against the wall on a trace elliott 7 band eq I got from Goodwill. Would not come on for nothing! And your advice on the power jack was spot on. I tested the jack, and it wasn't crossing over to let the battery work. Took out the jack and soldered the pads across on the board for a test, and the leds kicked on! Thank you Sir!!!!!
Excellent!
Great troubleshooting.... I subscribed......
Hey james, I have boss BD-2 as well, in another video you said boss doesn't sell parts anymore, I need to get a new dc power jack for the pedal. I do not know how to find the part number and I wanna make sure I order the right part. Where can I find the right part and or part number? Another concern is the pedal has the revised smaller circuit boards (I bought it brand new inn 2021) and it seems too have a slightly different DC power jack (I could be wrong about it being different), but this is why I wanna make sure I find the right part.
Hello James, I never seen the base of the reverb tank like that with wood shims. Are all fender pre cbs reverb tanks like that with the wood and cardboard? thanks for your videos....
Hi James, thanks for the video! I got a boss equalizer that works when you plug the battery and also sound works when on power source. But the led goes off when at power source and lights on when on battery. Any clue how to fix it? Thanks a lot!
Ensure you are using the correct power supply. The led indicator being dim or not lighting indicates the voltage is low. See the owners manual.
@@jamelectronics it was an old pedal, fixing the voltage helped the LED to come up. Thank you!
I have an old Crate B10 xl solid state amp that I’ve been trying to get working again for a couple years. There isn’t any repair places near me and I searched all over online with no luck finding any similar problems like mine. I was playing it and all of a sudden zero audio, not even a hum, the fuse wasn’t blown and it still powers on. I’ve confirmed that the speaker is still good, I can’t see any signs of something that got hot or blew, the jack inputs are making contact and are re-soldered, all of the wiring is good, and it doesn’t even make a sound when I touch the aux jack.
You say you checked the input jacks, but have you cleaned/checked the headphones jack? That jack can cause loss of audio if the normally closed contacts are dirty or not in contact. You could also plug in headphones and see if you have sound in the headphones. If no sound at headphone or line out then, possibly one of the two Integrated Circuit components. Diagnosing those are advanced troubleshooting. Start with the headphone Jack and report back.
I confirmed that all of the jacks are making contact and there is no sound when I plug in headphones.
Heres MY situation. Peavey XXL head Solid state ..... I kept getting weaker & weaker signal, almost like a bad cord or something .... Swicthed cords , tapped dials, tapped guitar, plugged straight into head with nothing else ... same problem signal getting weaker & woukld eventually come back up. .... Come to find out I had my Amp on 8ohms, but the cabinet is drawing 13.2ohms .so cab SHOULDVE been on 16 but it wasnt, it was on 8ohms. . Thinking I burned up something, plugged patch cable into effects loop on a whim ...........& the amp plays fine. Unplug the cable & it is back to fluctuating up & down again. ......would you still think its the input jacks for the effects loop?????
Sounds like you’ve determined the power amp section is ok. The problem is between the input jack where you plug in your guitar and the effects loop jacks. So, it still could be the effects loop jacks, but could also be any other component in the preamp section. I wish I could tell you where you’re losing signal, but that will take some advanced troubleshooting.
@@jamelectronics unplugged it, flooded the effects loop jacks, plugged the cord in and out 20ish times, floooded some more...... repeated , waited 20 minutes, played it, problem solved. Fixed, thanx to this video.
Mine doesn't have an effects loop, so then what?
Is there an easy way to apply contact cleaner to the pots - without completely dismantling the boards?
To really get the cleaner into the pot, the board has to be raised. However, you can remove the knobs and spray around the pot shaft and then rotate the pot back and forth. This often lets enough contact cleaner ooze down into the Pot to clear it.
@@jamelectronics Hi James! Thanks a lot for that - I was thinking of trying exactly that first.
Nice ..just solved my. issues Thanks so much.
You just fixed my Magnatone super 59 sprayed a little cleaner In the loop connections now i’m back to the great sound I know and love thanks
Glad I could help
Wrong mindset. Simply grow more and be happy watching the quirrels snack. If plentifull tomatoes they leave some for you. It's like squirrels eat tomatoes, squirrels happy. You watch squirrels snack, you happy. Plant more tomatoes, sell some, ur both happy. If the abundance of squirrels is too great, catch (a few, not all) and sell some, more people happy.
This is one of the most bizarre comments I've ever seen.
My man, you just gained a subscriber. Wow...I've been fighting this one for a couple of days and was getting ready to take it in. Found your video and it's been playing absolutely clean for about 45 minutes now. Thank you!!!
Great demo and info. I love more obscure radios. This one is great. 73. Chris. KC1KWX
Thanks , now I won’t sell it! I’ve put up with it for 27 years! On my Marshall jcm900 50 watt head
cathode current or is plate current better?
If you’re asking which should be used for amp biasing, you could use either. If you are using a calculator such as tedweber.com, they use cathode current. Someone else’s calculator might use plate current. Cathode current is easier to measure since you are dealing with lower voltages in the cathode circuit. If you measure cathode current but want to know plate current, you can subtract the screen grid current from the cathode current to get the plate current value. To get the screen grid current, measure the voltage drop across the screen grid resistor, divide by the value of the screen grid resistor and there you have it.
@@jamelectronics Yes, thanks so much....I'm slowly learning, I used to bias my amps but years and years ago and perhaps incomplete understanding...thank you for sharing
Hello. I have a Harley Benton GA5 guitar amp into which I would like to build in a spring reverb. Which I'll take from an old Laney PL50 Reverb Can you tell me where to attach it according to the diagram? I want to build it into the body and mix in the sound of reverb.
Hey man I have a line 6 amp that when I first plug in my guitar and power it on all the effects and knobs seem like they're turned up way high. I have to turn each knob and then it goes down to a normal tone what do you think that problem could be. Please and thank you
Does the amp have a memory function? It might be loading a preset with everything at 11 and moving the knobs overrides this.
The most critical connection made, from the 2 1k ohms , is absolutely confusing. Did you solder? Exactly where are the 2 resistors soldered to? Jerky video, thumb blocking, and no schematic drawing, pointing, exactly, where all connections are made.
You are free to move on, my friend.
@@jamelectronics Couldn't seem to take constructive objective critiquing? Hope you will inprove. Moved on nicely, by the way, after doing more research.😑
@@user-no9qn5gz8w, Bobby, I made this video 7 years ago. I apologize if my video quality is not up to your standards. So sorry about the shakiness, but my intention with my videos is only to give information about things I know about to those that would like to watch. There is the schematic drawing at 1:35 in the video that you said I should have included. As to soldering, it looks plain to me in the video that the connections are soldered but, they can be connected without soldering - it's the viewer's choice. I don't think my finger is blocking anything. The circuit is so simple. Only 2 components and a schematic to show what connects to what. Did you not see the schematic? I watch a lot of DIY videos. When I am doing a project that I need to know how to do, I watch several KZread videos. Some contain all the info I need, and some do not. I never critique someone else's video. They've taken the time to present something they believe will help someone else. I don't have the time and besides what's the purpose- they are not going to make a new video "fixing" the things I have pointed out. They're offering a video, and I can watch or not. By watching multiple ones, I get a very good idea of how to proceed. You "moving on" to do more "research" is a good thing. I'm sure you learned a lot. Good luck on your future pursuits!
Worked for my Ampeg SS-70, thanks!
Can I use it in Bluetooth decoder which has left and right connected to mono amplifier.....when I connect only right and ground it's sounds like...static fm the clarity of music does not clear at all do you think that's the reason
Straight forward, to the point with no extra banter...thank you!!
Wow! Nothing talk about that!! Thankyou very much!
trains and ham radio go hand in hand
Problem solved, thank you so much for all information!
Some people think it is better to use two tubes that are not perfectly balanced. And I am a fan of 5881's in Fender amps. To my ear, they have a cleaner, tighter bottom end. The current Tung-Sols seem to be good.
My Randall rbx500 was having a volume drop issue. Watched this did the cable trick, which worked after some giggling. Really annoying, it's still not 100% reliable, I think I'm going to have to get it removed as I will never use it. Really dumb idea fx loops. Thanks for the video
You might want to replace both of the effects jacks. But maybe it’s just a cracked solder joint on a jack. Thanks for watching my video!
A tip for you when setting out plants, for example tomato plants. Drive a piece of rebar in the ground beside your plants' take a piece of copper wire and conect it from rebar to rebar in series. Take a car battery and a set of jumper cables and connect the ground to one of the pieces of rebar or the copper wire' take the hot cable and touch it to the copper wire or one of the pieces of rebar for about 5/10 seconds. The worms in the ground will get excited and wiggle around, causing an under ground tillin effect. That will help the roots expand and the plants will grow faster. Most of the worms will come to the top of the ground' you can catch a few and use them to go fishing and have fish and tomato sandwiches.
Hi James, thank you for your videos, I'm gonna pass this by you just in case... I have a JCM 2000, English 100w head, (2005 post bias drift), just purchased off the Internet, I just re-tubed it but it still sounds like it has a cool bias setting even though I have it set hot (88mV, Marshall recommends 90), I tried cleaning the effects loop, patching it but to no avail... Something I just noticed is, if I tap on the master volume knob it won't completely mute when I have it on 0, if I keep tapping it goes away (completely mute), and comes back so naturally I stop tapping when it's muted (normal), ever come across anything like this?
I would use contact cleaner on the volume potentiometer if you haven’t already. Even turning the knob to 10 and back to 0 multiple times will sometimes clear any buildup inside the pot.
@@jamelectronics 👍
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Your “yellow” chord solution doesn’t work for my blackstar ht club 50 low volume issue. I can’t run my delay through the effects loop if I’m using your “yellow” chord trick. I never had this low volume issue till I bought a delay pedal and ran it through the effects loop. It’s definitely an effects loop issue. I opened a trouble tkt with Blackstar, no doubt they’ll know what the issue is. I just hope they will to tell me and that it can be fixed. You at least helped me isolate the issue. Thank you.
The dirty channel isn’t that good, the clean channel I like and takes distortion pedals real well.
Update. I spoke to an local amp repair guy. He explained this cable truck you were talking. I’m using that technique now to see if this rules out my amp or my delay pedal. He said that he has seen where the delay pedal can cause the low volume issue. I’ll follow up.
Yes, the dirty channel I dont care for, the clean is a good channel for only one control knob takes my J Rockett Melody pedal real well.
It was a bad cable!!!! All good now, thank you!!!!!
THANK YOU!
I am going to try this this year. Nothing else has worked for the last 5 yrs.
I use the Patriot PE-2 Fence Energizer. It’ done the job for me.
Skull yeah hoss 1!1!-
Solved my problem too. Thanks James. Was trying to get two old Boss peddles to work from a multi power supply. It has 8 x 9V and 2 x switchable 9-12-18V. Guess which two suddenly made them work on 12V,,, Here was me thinking I need to replace an CE-2 and a DM-3
can i do the same cable patch method on the power amp input and output.?? ...Edited comment well i did the patch on the effects loops i just bought an ampeg VH-140C for 100 bucks the owner stated on the sale add the volume cut off i tell him I'll take it maybe i can fix it i did a throughly clean-up but the problems did not get fixed with the volume cutting off on the high and low channel even one of the speakers wasn't getting signal out weird that i use a effects modeler on the efffect loop input and i switch it to preamp input to and it work fine i was watching videos about fx loop and came across this one and i did exactly this i patch the effects loops and voila problem fixed thank you very much
I planned my whole weekend around the repair of my amp and it was this easy fix, thank you
Contact cleaner is my new best friend , thanks, you just save me a visit to the tech !!
Great video. I have a Crate XT15R...got off Craigslist free came with free Japanese LP with broken headstock. Repaired guitar...re-strung...Amp only worked through headphones. :( After watching your video, I removed the amp from the case and was able to clean the contacts in headphone and speaker jacks (I used some tweezers to wiggle and drag thin strip of fine sandpaper between the contacts). Works like new! Video inspired me to get at the jacks!
Great!
@@jamelectronicswhen using a non-contact voltage detector, the wires coming from my power switch to the fuse box at the back there are hot. The red and green wires coming out get nothing. Does that suggest an issue with the fuse(s)? I don’t see an easy way to replace them on this unit. (Crate gfx15 looks really similar to your on the inside) Any experience with this?
There are 3 wires coming into the amp from the power cord. The "hot" wire goes to the on/off switch and then to the transformer. The transformer is mounted on the back of the chassis (could this be what you think is a fuse block?). The 2nd wire goes straight to the transformer and is the Neutral wire. It will not show any voltage with your probe. The 3rd wire is a ground and is terminated directly to the chassis and is a safety ground and obviously has no voltage. I don't believe there is a fuse in your amp. Not sure what your issue is with the amp, but I hope this helps.
You might have replied to my comment by accident...
@@jamelectronics oh I think what I was calling a fuse box is the transformer. So, should the red and green wires coming out the bottom going to the board be hot?
i wonder if i can use it safely mono out to stereo input.
You can use it to split a mono input into 2 mono outs but this won’t give you “stereo”, it will give you 2 identical mono signals.
Nice harvest! Congrats!!
Thank you so much for this video!! I've spent months trying to figure out what could be the issue and finally it worked like magic! I was just about ready to throw my amp out the window as the local tech could not remedy it. Thank you!!
What if the volume fade-out is NOT solved by the patch cable from Preamp Out to Poweramp In? My brother has a Peavey Artist VT hybrid combo amp and it's volume always drops about 30 dB after it's been operating for about 10 minutes. It does the same fading when the Preamp Out of a second (good) amp is cabled to the sick amp's Poweramp In jack... a setup intended to test the sick amp's poweramp module. (Note: The Preamp Out jack of the sick amp was also cabled to the Poweramp In of the good amp during this test, but that pair wasn't being driven by the input signal.) Does this imply the jacks' internal connectors are NOT responsible for the fading? The four output tubes appear to glow orange as steadily after the volume fades as before. If the fadeout might be tube-related, could that be tested by removing two of the four tubes? And then reinstalling those two and removing the other two? Or does the amp require all four tubes to be present to work at all?
So how do you run effects pedals into the effects loop if you go with the second remedy of plugging a mono/guitar cable into the send/return ports? Was always told to run distortion/overdrive through the main input jack and any effects like delay/reverb through the effects loop.
The problem described only occurs when nothing is plugged into the effects loop jacks. If you’re using the effects loop with pedals and having a problem, it’s probably something else.
@jamelectronics It's weird...I power up my amp and it just cuts in and out. It's very muffled when cutting out. Gonna try some contact cleaner first I guess
Thank you for the tip I am having this problem I hope it works
James what is SW called. How to get it? Do you need hardware to do the interface to laptop?
The software can be obtained from this website: wsjt.sourceforge.io/wsjtx.html or google WSJT-X Use ARRL.org QST articles as to how to set up or google FT8 and find lots of videos and info on how to do it. I use a SignaLink USB device to connect radio to PC. You can do it! Have fun!
Very informative and interesting. Thank you. Subscribed!