Towards the beginning I said leaky film caps don’t matter in an amp - in context you can tell I meant leaky caps don’t matter in the tone circuit of a GUITAR. And late in the video I said Wima when I meant Vishay regarding MKT1813 caps. Those responsible have been sacked.

@goodun2974

23 күн бұрын

Where can we go to get our mispoken back? 🤔😉

@robhargraves3805

22 күн бұрын

Yeah I think we all understood what you meant 😅

@josephc3276

22 күн бұрын

😅😂 Those responsible have been stacked 😅😂

@mikewithers299

22 күн бұрын

Thank you Lyle for clarifying that little error. Those of us who are watching you work know you are trying to chew gum and walk at the same time. It's challenging to multi-task for me, so I get it. Filming and working isn't as much fun as it looks, and keep a narrative going. Thanks for all you do.

"Cleaning, cleaning, cleaning" automatically reminded me of Ted's "polishing, polishing, polishing"

@PsionicAudio

23 күн бұрын

It’s a similar mindset.

@martindl9897

23 күн бұрын

@@PsionicAudio Indeed, both of you have a distinctive way of working, explaining and reasoning. Nowadays... we are losing that mindset and that's a shame. Thanks for your videos and great work!

@goodun2974

23 күн бұрын

​@@PsionicAudio, "polishing the gloss to be the boss!" 😁

@benlogan430

22 күн бұрын

Polish the most, put it on your toast! Sorry got all PE#1.

I've said it before...I'll say it again. I appreciate EVER nugget of information you share, It's all GOLD!!!

Honoring high voltage musical devices is respect not arrogant behavior period. Enduring classic amps are a fine and rare good thing . A noble pursuit indeed .

@goodun2974

22 күн бұрын

"There are old tube guitar amp techs, and there are bold tube guitar amp techs, but there are no old, bold tube guitar amp techs."

Thou quoteth Life of Brian- my favorite bit. At this time, a friend shall lose his friend's hammer and the young shall not know where lieth the things possessed by their fathers that their fathers put there only just the night before, about eight o'clock.

These videos of you actually doing the work are much appreciated and that's what makes this one Gold!

Morning coffee , and the perfect entertainment , Thank you Lyle . I and have been building amps since 85 , self taught and learned from books , manuals , and original amps , blew up a lot of shit lol and learned , have a hell of a collection of Champs , deluxes , Supros , Gibby's ,and off the wall shit, no Marshal though ....Wish you were around back then .... Am a Tele player over 50 years , but have been playing Mississippi sax player since 12 , once I found DC power for my harp , there was no turning back .... , love clean , but discovering crunch in my later years , keeps me young . There are so few of us left , one must keep this craft alive , Thank YOU for ALL that you do . I give a lot of my amps to aspiring young players , also am a bit of a luthier and can there fore help with their instrument's , Have always been involved in promoting music in schools and anywhere I can ......cheers bro .

72’s are a D serial. I thought they didn’t use B. 69 and ‘70’s can be A and 71’s C. Maybe it’s a short run where some escaped with a B but they scrapped it soon after? But it’s a ST-1 board, correct? Which would put it anywhere after the middle of ‘73, when they went PCB.

I do the odd soldering stuff, and I have to point in admiration at your dexterity and brevity with the braid/desoldering. It may be dull to most but I shake my head and smile watching it. Mainly because I can perma-solder braid to wire with admirable regularity. ;))

@PsionicAudio

23 күн бұрын

Do it a few more thousand hours. You’ll get the hang of it. ;)

@whatilearnttoday5295

22 күн бұрын

Shit I've never been able to get braid to even work ;)

@billroberts849

10 күн бұрын

@@whatilearnttoday5295 it really is dependent on the braid (brand & type) you use and using the correct braid for the job. I have used braid that just does not work unless used with much flux and others that work well. Lyle uses the Techspray 1823 #4 try that.

I find the evolution (or de-evolution) of amp pc boards interesting. They went from beefy, robust almost indestructible slabs, to delicate thin wafers that get damaged by just breathing on them.

@PsionicAudio

23 күн бұрын

I’m a bit confused by this comment, as this board from ‘73 is definitely in the delicate wafer category.

@stratrat57

23 күн бұрын

@PsionicAudio I worked on a JCM 900 Dual Reverb 4100, that was my reference point....compared to the SL.

@PsionicAudio

23 күн бұрын

Ah. The boards are actually pretty much the same. The old ones just had fewer hot things on them. And no pots suspending everything.

@goodun2974

22 күн бұрын

​@@PsionicAudio, the brown phenolic circuit boards of the 50's and early 60's were fairly difficult to delaminate and the traces were usually wide and thick, and sometimes tinned with solder ---- but you didn't start seeing printed circuit construction in guitar amps until the mid-late 60's (Ampeg was an early adopter, but who was first?); and by the mid 70's nearky every consumer device was using the thinnest, cheapest, most fragile, low copper content boards they could get away with......which is one thing for solid-state equipment run at modest voltages, but tube gear at 400+ volts needs quality pcb's with a high insulation factor.

@mikewithers299

22 күн бұрын

​@PsionicAudio Lyle do you have a good recommendation for trace repairs, as in a brand? My 1978 Marshall traces are much thinner than this one, and the previous tech/owner "cooked" all the pads on several small transistors. They did a bad job tack soldering it back together also.

Someone keeps moving my-y-y chair! Thanks for the TMBG reference 😎

I know everthing you do is a labour of love. Thank you Lyle

Lyle...You ARE one of the very best in your profession 😎👍

@PsionicAudio

23 күн бұрын

Thanks man but I can’t think like that. I just try to be the best tech at my bench. You’ll see me make a boneheaded goof in tomorrow’s video. I mean, you’ll see me catch it and correct it, but still.

@richardlynch5632

23 күн бұрын

@@PsionicAudio And there it is folks... WHY Lyle is one of the best in his profession...!!!😎👍👍

@goodun2974

22 күн бұрын

​@@PsionicAudio, it has been said that an expert is someone who has made every mistake there is to make in his or her field; by that metric I am clearly not an expert, and sometimes I make the same mistake twice because I've forgotten about the first time!

Thank You for the long form Video.

My guess is that the “B” in the serial number was a poorly stamped “E” which would make it 73. Thought they switched from turret board to PCB in 74, but I wouldn’t be surprised if it was end of 73. I know the 73 (validated by inspection sticker, serial number, cap codes before I replaced etc) I owned for years was turret board. Regardless very cool amp!

Great video. Thanks.

Thanks for the video Sir.

Beautiful amp

I hate when I pick up a Crescent Wrench and it's the wrong size, Ha ha!

@mikewithers299

22 күн бұрын

🤣🤣🤣

@whatilearnttoday5295

22 күн бұрын

I had this problem the other day...

@whatilearnttoday5295

22 күн бұрын

Look to be honest. All jokes aside. It's very important that people using one know how important it is to property tighten with every turn. How the sides must be in full contact. It's your tool, it will last you a lifetime.

A morning coffee and some very good entertainment . thank you .

Jolly good show, ol' chap!

Audio good,visual good too!

That’s a great album title

Excellent They Might Be Giants reference!

“I have come here to chew bubble gum and solder parts, and I'm all out of bubble gum”

Don't worry about if it's fascinating or not. Don't worry about filling space with talking. I did enjoy the Les Paul owner jibe though ;)

Best title ever!

Came to see the amp. Stayed for the They Might Be Giants. 13:26

some "snipidy-doo-da" as Brad would say

@BradsGuitarGarage

21 күн бұрын

You know it, mate!

TMBG and Romeo Void song references in the same video! :)

I will use the baby German made Knipex Channelock style pliers on pot nuts. End on the nut just like Lyle is using his adjustable wrench. It's just a little potentiometer nut, not a rusted on head bolt for a 1937 flathead Ford V8. If it was on that tight the bushing on the pot would have broken off years ago. It's brass or pot metal.

Such great content always. We need to get you some kind of overhead camera holder.

@PsionicAudio

22 күн бұрын

Thanks. I have one and I’ve used it in quite a few videos. It’s a bit tricky with the lens I have though, looks kind of flat and contrast is diminished.

@johnjoyce

22 күн бұрын

@@PsionicAudio lighting is damn hard if it isn’t right with easy stuff.

Crecent wrench = 9/16ths adjustable 😅

Mahalo Lyle!

Your socks go out to the socks club and hook up with other socks. Some go to the same socks club so you’re probably going to end up with mismatched socks of different sizes. Hey, it’s all good. Feet need socks Cheers from NZ 🤘🎸😎

Soldering wires to terminals and turrets requires good technique because you want the wire to be insulated right up to but just shy of touching theterminal or turret, because if the plastic insulation is touching the metal parts your soldering, something apparently cooks out of the wire and contaminates the solder joint. I suspect that sometimes the hot insulation outgasses something that affects the nearby solder joint as the insulation is being melting by the heat of the soldering process, even if solder and the wire jacketing do not meet.

“Many amazing uses for invisible metal”

I've dropped them and other larger parts and watched them bounce up toward me and... vanish (turn invisible) right before my eyes. Never to be seen again!!!!

Next time you get shit for using a Crescent Wrench, throw it back in their face and tell 'em it's actually 'a vintage adjustable spanner'...

@goodun2974

22 күн бұрын

As long as Lyle's not working around a missile silo, the crescent wrench is fine! "The warning lights are flashing down at quality control/somebody threw a spanner, threw it in a hole...." Dire Straits

I love to watch soldering / de-soldering. Especially by people that do it elegantly. Any chance of an overhead view?

Audio is fine

The way those wires are threaded thru the board seems like it will be very difficult to free the board from the chassis. Anxious to see that.

Never say never.

Interesting that the traces are external ,Im also curious how you will bond the Grounds I know you dont like the stacon crimp type mechanical connectors especially because the wire is stranded ,shame you cant use some type of terminal there so only one wire is soldered to the post and would take away originality

I knew an old engineer that called the crecsent wrench a "boiler maker's hammer".

That’s a real word in this world 😂

That's a deep Might be Giants callback.

👍 👍

Here in Portugal is cherry season...

Lyle, if they don't like your ways, they should open a shop and take your customers... I don't see that happening. F'um.

HA! :D Thats Monty Pythons! Life of Brian! :D

Run hot. Hit it and quit it. Rather run hot than pushing on a joint to get it to heat up …. While fucking up the via or trace.

@bradp686

22 күн бұрын

Me too. Floor the temp. In and out.

Assuming they're not stainless, you could remove those little toothed washers the easy way, with a magnet. I don't think I've ever seen you use a telescoping magnet, but I use one frequently. Also, because my eyes are old, I invariably have a flashlight nearby when I'm working on anything with small parts, and most of my flashlights have strong magnets attached to the bottom end (many cheap flashlights these days have a flash mode designed to function like a road flare if your car breaks down at night, and the magnet allows you to sticknthe flashlight to the roof or hood of the car). Which brings up a philosophical point; If asked what was the most important invention or discovery made by early man, most people would probably say fire, or the wheel ---- but I think I'd say magnets and magnetism, and figuring out how to utilize them. 😉

@PsionicAudio

22 күн бұрын

These ones aren’t ferric. I tried a magnetized screwdriver first, edited out.

@goodun2974

22 күн бұрын

@@PsionicAudio , I've worked on a lot of Nakamichi hifi equipment in the past ---- in their amps they used a mix of machine screws that were anodized a nearly identical black but some were steel and magnetic, and others were some sort of copper alloy, non-magnetic, and soft, therefore easily stripped or subject to chewed heads. Not to mention that they were JIS, Japanese Industrial Standard Phillips and a little different from the Philips screws we are used to. They required a light touch with a handheld screwdriver to get them in and out without beating them up.

@goodun2974

22 күн бұрын

@@PsionicAudio , they're not ferric, they're feral, poised to escape into the wild!

Those things with a sort of... raffia work base? With an attachment?

Love all your videos. Just wondering though, why not put the camera on the other side pointing towards you sometimes? Must be a good reason why you don’t.

@PsionicAudio

22 күн бұрын

It’s about the amps, not me. Unless you meant just why not have the camera on the other side of the chassis, in which case it would be in the way of my scopes and meters and tools.

@simbotist

22 күн бұрын

@@PsionicAudio got it. Yeah I meant so we can see the work better, not you.

what braid you use? i use NTE but this stuff is costing me $10/roll and i go through alotta it

@PsionicAudio

18 күн бұрын

In the description

My dryer doesn’t play too many tricks but the gnomes like to hide random things.

All this talk about preserved mustard is making me hungry

Chameleon screws and camouflage nuts? More color-match changes than an octopus is capable of, or Mystique from the X-men movies. If you were working on turntables and tape decks like I have, you'd be cautioning about "Jesus clips", those little E-Clips and C-clips that you pry off only to have them go flying into another dimension and disappear, making you wonder, "Jesus Christ, where did that damn clip go to?!"

@PsionicAudio

22 күн бұрын

I know about E clip escapement…

They might be giants... maybe. Python-quoting giants at that..

Old cap myths, bunch of mumble bumblebees. It's almost like claiming old 9v batteries give yer stomp box a vintage magical tone... Great video,by the way. Cheers!

@DetroitWrecker666

23 күн бұрын

Absolutely! You didn't know that? NOS 9V are shiznic

@fullwaverecked

23 күн бұрын

@@DetroitWrecker666 Ha! Shiznic in my Shnoozle!

@DetroitWrecker666

22 күн бұрын

@@fullwaverecked well, I tend to cuss a lot. It will be flagged by KZread. So I have to be creative.

@fullwaverecked

22 күн бұрын

@@DetroitWrecker666 And I as well, but one of my buddies can't say "Pass the salt" without dropping four ef bombs, so I think we're doing pretty good.

The Honda dealersip charges $1500 to replace a starter.....1.5hr job. I'm wondering how much this cost the amp owner?

@PsionicAudio

23 күн бұрын

Right now we’re at two billable hours with the bad work removed, the board cleaned and ready to be repopulated, the pots pulled, and the preamp filter cap out. Note that 1.5 hours of that is undoing the previous guy’s bad work. I don’t charge dealership prices, so move that decimal to the left one digit so far.

I'd like to think that tearing out that pcb and rebuilding the circuit on a decent turret board wouldn't hurt the resale value. "Like to think' Maybe thats wishful thinking , and as much as i love old marshalls , that pcb has to be a pain in the ass , and God knows it's cheaply made.

@PsionicAudio

22 күн бұрын

You might like this one: Last Look Inside This Marshall | '76 Superlead Mk II Part 10 kzread.info/dash/bejne/nI2Erqt7h7zAeco.html

@soapboxearth2

22 күн бұрын

@PsionicAudio yeah, man. I remember that one well. Really nice job, and I know it gave you huge satisfaction. It will be around after all the stock st1 boards fail, I'm sure.

I just finished a 74 Super bass, what a treat. NOT

B serial number?? Amps from 1970 should be PTP...

@PsionicAudio

22 күн бұрын

Exactly. Maybe an older chassis was used. Dunno. But definitely late ‘73 at the earliest.

@goodun2974

22 күн бұрын

Lyle says its a '73 amp; and Marshall used turret board construction before they went to printed circuit boards. I don't know if they ever used true point to point construction; perhaps in their earliest builds?

@JoseCarbia

22 күн бұрын

@@goodun2974 Never true point to point in Marshall.

@PsionicAudio

22 күн бұрын

Yeah, I figured he meant turret.

@lowqualityguitarvideos

22 күн бұрын

Id agree with Lyle 73/74. This color PCB I imagine is the earlier run before they changed to green PCB.

I hate to have to thumbs down this video but it’s all hand