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Samsung Plasma Power Supply Repair BN44-00445A Power Factor Correction
Find the correct TV part for your TV and more at ShopJimmy.com Click Here: bit.ly/ShopJimmy
Repairing a Samsung Power Supply Board with Power Factor Correction Circuit Failure
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My friend brought one of these over recently. You're spot on with the "fets" and the silicone. The board looks good, I looked at the silicone around the MOSFETS suspiciously myself, to hear you mention them makes me feel real good about it. Thanks again for your service. I will do my part to keep Plasma TV's out of the landfill.
Thank You for making this video. Just fixed my blown plasma by replacing those two FETs!! You've helped save another plasma from the landfill!
Ordered your kit and as a novice solderer was able to fix my TV, thanks!
Another Norcal masterpiece. Thanks. This helped me sort out a BN44-00446A out of the slimline smart model 51D8000. 2 blown FETs and same main fuse blown. after 3 failed attempts including doing some caps around them. I'm always on the lookout for cracks but missed these completely. After seeing this and using some jeweller loupes found the same cracks you did. replaced thos FETs and fuse again along with repairing the bad joints and has not failed after 4 hours. Was lasting about 50mins and must have heated up enough for one of those joints to fail and short out. Cheers
YOU ARE A TRUE T.V ENGINEER YOU EXPLAIN ALL VERY WELL FOR ALL OF AS TO UNDERSTAND THANK YOU, I HAVE FIXED MANY T.VS BY USEING YOUR TEACHING.
AS always, you present a very useful tip and demonstration of how to service a PCB. I've watched many of your videos and have learned some good tips I'll use regularly. WD
Ideally, you should have replaced the drive IC as well, as sometimes (even with the gate drive circuitry testing OK, the drive waveform can be corrupt, and the transistors may blow again after couple of hours even if TV set works ok. You can use the scope to measure the waveform, and check temperature of the heatsink with the laser thermometer to find out if the FETs are not running two warm aftr the repair. PFC circuts usually do NOT run very warm. Good Video!!! regards from Holywood Rd TV repairs, Befast.
@Gfunkbus76
5 жыл бұрын
What do mean by Drive IC? Which IC are you referring to? Cheers from Vancouver!
@asifrana5392
5 жыл бұрын
Yes it could be
@jeremylister89
5 жыл бұрын
Yes agree. Drive ics can have intermittent faults. Usually internal bond wire issues.
Does anyone have the schematics for this board?
hello would you please reply me? Hello please Mr.Norcal i have exact issue shorted QP804 easy to read part# 6R190C6 but shorted diode DP804 ...etc my problem is QP806 is shorted open resistor 47,20 ohm...etc , instead of asking you for QP806; QP805 PART #? CAN YOU tell me where to get this BN44-00445c schematic? if canot then WOULD YOU PLEASE GIVE ME PART # FOR QP806, QP805 And my last is QS802 that drive the opto isolator . please replay me if you can to save me from yelling wife for opened tv every where in the house :) ! have a great day sir
I ended up repairing my PSU card after having to replace it 3 separate times. Found a bad diode (more like degraded), but noticed my PSU was still restarting the TV on and off (original discrepancy). I had already replaced some caps that may have gone bad but had no visible signs with a higher voltage tolerance. But what I found out was that the Vs reading was showing 220V (supposed to be between 214.5v and 223.5v). When I adjusted the pot for that voltage, the buzzing from the power distribution card (not the PSU) got softer and the TV stopped restarting. Tested for a full day and no restarts. Not sure if I fixed the issue or just extended the life of the transistors temporarily. What I almost ended up replacing was the relay. I felt like it was opening/closing on its own after every 3 min as if it couldn't handle the current/voltage levels. Do you think I fixed the issue? What exactly is Vs and Va?
Hi ,, My plasma samsung 43'' i v connected the powersupply board seperately , n after switch. On , all the voltages come on and immediately drop down to few volts,,,,, plz advice .... It's a ps43e490b3r samsung..... I'm from Goa . 🙏
I have the same power board same problem, do you take mail in orders and if so how much to fix? Thanks
You mentioned that QP805 and QP806 sometimes fail as well. Mine has those components blown (along with RP807 & RP808) but I can't identify the transistors/diodes by the limited numbers on them. Do you have a replacement number for them and perhaps a source?
I had a problem with my set, no picture but sound. checked your video and found one loose pin on a mosfet. re-soldered it and so far so good, the set has been running for 15 minutes now usually it would run for 2-3 minutes while the mosfer heats up then the computer would shut the power supply. Do you think i should still change the mosfet? there must be a reason why this solder was loose? I've read my VA and VS and they are good.
So what board would I replace if the Samsung 60" Plasma TV won't "Start" when hot? "Starting" is when you press the on button, see a little flash on the screen followed by the blue Samsung logo and then your signal. Not "Starting" is when you press the on button and nothing happens but five seconds later the power light flashes on and off. Let the set cool down, disconnect-reconnect power and the set "Starts" as normal. Any idea what board has gone?
@norcal715
4 жыл бұрын
Really hard to say, I would start with a cold set and then warm up each board one at a time with a heat gun or a hair dryer until you can determine which board is causing the problem. It may take several days to find the bad board.
Can these two MOS FETs be tested in circuit. My fuse is blown and the same two test shorted D to S in the circuit on very similar BN44- 00619A. Thanks for showing how to test the gate inputs.
i have this exact board. i did notice. two soldier terminals cracked where you replied get them fixed asap. my samsung plasma 59 inch. picture goes off after a few minutes, still has sound. i pulled and checked the y boards and the IC chips are ok. I'm having the power board solider. where should i begin to look next.
@Gfunkbus76
5 жыл бұрын
Fix it?
With me is the transistor 6r190c6 broken synonymous but unfortunately I can not find one with the same label since the page is still HAX124 is printed. Is this just a batch number? Or are there differences with these transistors with the designation 6r190c6?I have the same samsung PS59D500C1W
Thank you sir. Great video. I learned a lot. My bn44-508a is rumming but the problem is D5 output is 5.12 volts, it should be 3 volts only.
good morning. Is there a way to contact you? We have a PND64 which no longer turns on. the power LED does a blink pattern of 2 blinks 5 times, and then resets and tries again. It has this exact same power board (including version). What testing did you do to determine the power board was the culprit? I have done repairs on computer monitors by replacing caps, etc, but haven't found any damage to our board, no bulging caps, etc.
@norcal715
4 жыл бұрын
norcal715videos@gmail.com
Hi, Thank you for this video. I have one of this pcb which has an issue. there is a short circuit between 5.3V and GND. fets were also damage and move at the import was blow too. I was wondering if you have the Sch of the boards, of if you know what might cause this issue?.
What is the part number of the green capacitor?
Hello, Awesome video! I have the same board and DP804/06/08 are burnt what can I replace it with. I would appreciate your reply : ) Thanks in advance.
Great video thanks for posting. I have a 2010 Samsung PN60550E Plasma I am trying to save. I replaced a few of the capacitors on the power supply. When I got the TV (free on Craig's List) the tv had no picture, no sound and the red light on the front of the TV was not lit. I now have a red light on the front after replacing a couple of capacitors, but still no picture or sound. I also noted that there is a small LED light just above the input for the power cord and it does not light up. I am wondering if the LED light on the power supply does not light up if that might be an indication of something. Thoughts?
I have a power supply board that fails to start only when the YSUS Buffers are plugged into the YSUS board. Replaced both the YSUS and the buffers with no luck. Could it be the power supply fails only under load? I am tempted to replace the power supply board as well...
I've got a Samsung plasma, pn50c590, and I get a burning electronic smell and sizzle/crackling noise when I power it on. No picture just the Samsung sound. Any help would be appreciated. Thanks
I bought a similar kit for the BN44-00515A from ShopJimmy.com through Ebay. Would you happen to have a diagram or picture of the back side of that board showing which direction the 2 small IC's ICP801 and US801 face? I had them marked with a maker on the board but my solder flux and alcohol erased my markings when removing the old IC's and I don't want to install the new ones backwards. Actually enough of my red mark on the small 8 pin IC survived to clearly show it was installed opposite the markings on the board. (The little arrows in the artwork on the end pins which I would have assumed indicate the pin 1 side and that's how the 3rd IC not replaced in the kit is placed, but this really makes me 2nd guess weather the original IC was placed correctly and I have no clue which way ICP801 faces. I want to get them right the 1st time and not have all my hard work and new parts blow up in my face. You have a picture of the back side of the BN44-00515A board on the Shop Jimmy website (out of stock) but it isn't quite clear enough to see the IC polarity. Do you have a more clear picture or diagram you could email me? keshenatech1@gmail.com Thanks
Good Info - Can you please also explain how to check the Power supply output pins to first identify that Power supply is actually working. I have a samsung PS51D8000 power supply (BN44-00446A) and I want to check if it is working properly or not. My Samsung TV has died couple of days ago and there is no standby light even coming ON. I have multi-meter and for my learning purposes, I want to start checking the power supply myself. I have checked the fuses and it is working fine. Continuity shows that there is no broken connection inside the fuse of Power supply & the main plug. Appreciate if you can guide me some basic checks which will help me to learn it, thanks
I have a tv the fuse looks to be functional. Should I replace the entire power supply board since the tv has a soft ticking sound when it tries to power on?
Absolutely great. Quite enjoyed watching this whole video. Totally agree with u regarding better picture quality with the plasma but unfortunately the components used and some of the designs are quite cheap and nasty. The dry soldered joins and ringed dry joins DO seem to be getting less common. Mostly the cheap n nasty components from manufacture popping. Currently working on a 42" Plasma Bush, BPDP42HD3. No picture but sound fault. ybuffer ok. Ysus board supplys xsus board. Its a bit of a head scratcher :(
An isolated 1Mohm resistor @10:50 doesn't dissapate anything if it isn't connected to ground. It must connect to ground to drain the charge somewhere and the resistor will save your life It's not magic. It will limit the current that would otherwise kill you if you accidentally touch something hot, but that's the only protection it gives you as you will still get zapped. It does not by itself magically dissipate or absorb static electricity either.
@norcal715
4 жыл бұрын
If you listen closely you will hear me say 1megohm to ground at 11:05
Hi, great video, thank you! Have you ever seen the MOV/Varistor blow (crack in half) by the relay? I wonder what could have caused this? TV was fine, powered up and running a few minutes then we heard a ‘Pop’ and fuse blew on the mains plug (both internal fuses fine!) - the varistor is the only part that is damaged. Replacing plug fuse and powering up blows it again instantly... board variant is BN44-00619A. Just seems a bizarre fault to me!
@anonyymi9475
5 жыл бұрын
BN44-00445C board variant here, exactly the same happened few weeks ago
@Swaggarization
5 жыл бұрын
PSU board: BN44-00513A (from a PS60E6500 plasma tv). Also both internal fuses ok, main fuse out! Kind of bizar isn’t it? While the ac-plug poles are not shorted. They measure high (dc) resistance. What can it be?
i have the exact set im tring to save it comes on perfect after being unpluged for a while then goes dead slow heartbeat ive replaced the the y main and x main still the same help please
Hey NorCal So I just got this TV for free from someone who said it was not turning on at all. So after having opening it I noticed on the PSU board that component QS 804 had melted traces and blown components around too here is a list of what was blown QS 804 RS 833 RS 834 RS 835 And that other component I really cannot identify which is DS 810 I looked at DS 808 also unreadable... Do you have any idea of what could be this component ?? thanks in advance hopefully you can answer me really liked your video
@michelcote1513
3 жыл бұрын
I think I found it BAV70 let me know what you think
You tube is awesome, never knew all this free education existed, videos are everywhere on PFC, its what I paid for yrs ago. If you want to learn electronics, get yourself a scope, sig gen, power supply, DVOM, bread board kit, clip wires, and components, there are free circuits all over the web to build, measure and test. you can buy am radio kits and such. Do that and I guarantee you will learn. In school we built simple circuits consisting of 2 to 5 components max, you think oh that's simple? come back and tell me. Spice simulation is also good, I had a program like that at one time. Learn DC and ohms law first, then go to AC then digital and semiconductors. Maximum math we used was algebra and trig, two yr degree. You MUST do the math as part of it. Its all safe, you use low voltage low amperage circuits, the sig gen makes your AC sine wave so no mains involved, have fun, burn stuff up sometimes, its how you learn.
HOLA BUENAS NOCHES, SERIA TAN AMABLE DE DECIRME QUE NUMERO DE INTEGRADO LLEVA ES UNO DE DIEZ PATAS, VEO QUE LLEVA UNO PERO NO SE CUAL ES EL NUMERO
hi norcal. my samsung 55 pn59d550c1f blinking 5 time the red led. and do noting. thank for help.
I’m repairing a similar board BN44-00515A in the same area. Already replaced a 10A fuse, QP804, RP807, RP808 and RP812 which were fried. LP804 is open cct but I can’t figure out its value. It’s under 10uH as far as I can tell with my cheap LCR meter assuming it’s the same as one in the adjacent cct. Where can I find a cct diagram or parts list for this or any similar model as they all seem about the same design.
@dray22222
3 жыл бұрын
Exact problem I have, but in the same board as video. I also had the QP802 split in half and short the fuse
i have power supply board of lcd tv the standby voltage is not stable 5v. the voltage i measure is going up and down from 4.7v to 5.2v vice versa what is the problem of this? can you help the conclusion.
Awesome video and great tips! I have a blown CP816 (one of the blue ceramic caps next to CP817 and the QP802 MOSFET). Looking at buying the ShopJimmy repair kit. I'd like to understand why CP816 burned up, what it else in the circuit may have gone. Fuses are fine, larger green power resistors next to CP816/CP817 seem ok as well. Any help appreciated! I'm not sure how to properly test the MOSFETs with my multimeter, but I removed the silicone and desoldered both QP804 and QP802. I have the schematic for BN44-00445C (download from web) and the labeling is different... seems they call is QP801 and QP802. Any ideas? Thanks!
@markcummings150
4 жыл бұрын
Edy Braun I’m repairing a similar model BN44-00515A for a friend. Where did you find your cct diagram, I haven’t had any success finding one yet.
@EdyBraun
4 жыл бұрын
@@markcummings150 I successfully repaired my TV with the ShopJimmy kit (see kzread.info/dash/bejne/iaJr1tGPddOtiKw.html). I didn't find schematic for my board version "C" but in general you can find it here: www.eserviceinfo.com/index.php?what=search2&searchstring=bn44-00515a
I'm working on a samsung plasma, 50" what does the PFC transistors do exactly, mine seem to be shorted too, main 12 amp fuse was blown, in-rush therms were also cooked, but the 2 amp and 5 amp fuses were ok.
@norcal715
2 жыл бұрын
PFC (power factor correction) changes the phase of voltage to current relationship. If the current draw is in phase with the voltage then the power factor is a perfect "1" This circuit makes it from about .6-.65 power factor to about .8-.85 (or better) power factor. Just makes it more efficient in other words.
@vernonbosshard9317
2 жыл бұрын
I took electronics at TSTC Waco TX in 2000, two yr degree, I have not worked on TVs until now, so I'm a bit fuzzy on all this. So can I test the TV without the PFC on? I have the FETs out, I saw another video of a tech doing that but to me it seems risky, might draw to much current, I dunno. I have not seen this TV work yet, I got it like this.
@vernonbosshard9317
2 жыл бұрын
To answer my own question...you can cancel pfc on some boards I read but not this one...its smart. So... waiting on the fets now...should be here today or tom...I will post back. Oh and I recalled a pneumonic we learned...ELI the ICE man...E is voltage...L is inductance... I is current...C is capacitance. Current leads in capacitive circuits... voltage leads in inductive circuits...you counteract one with the other...TVs are capacitive....so they added a coil...to add inductance...and boost...look up buck and boost converters for an example simplified
Another great vid. Re. plasmas, do you still recommend repairing failed sustain boards? New mdules in the supply chain are not available, only pulls from used sets which have limited life expectancy. Interested in your view Steve.
@norcal715
9 жыл бұрын
+davecc0000 The later model plasma's especially Panasonic and Samsung used discrete components in their sustain boards and not the modules. LG was a fan of the modules. less design on their part I guess! Thats why Samsung and Panasonic were better sets in my opinion.
@davecc0000
9 жыл бұрын
+norcal715 Thanks Steve. Great to know. What year/series did Pan & Sam start using discretes? You're doing great work Steve, one of the few helping keep these TVs going.
I have samsun plasma tv it's power supply haveing a problem when power on its giving tick tick novice screen wants illuminate can you please tell what is the problem witch area I have to chack thanks I am A.J.J silva form Srilanka
Checking voltage on filter capacitor does not mean that power supply is working correctly, what about testing output ?
Got a 60 inch plasma Samsung 2009 dont turn on researching on what to do red lite on but dont turn on.
Hai Steve. Do you have schematic for BN44-00508A. I can only find BN44-00508B witch is completely defrent design.
@norcal715
4 жыл бұрын
No I looked and I can not find that specific schematic. Sorry
@mohamadasriabdulazid4784
4 жыл бұрын
@@norcal715 oh. Thank you, it ok. I just found a second circuit on that SMPS board. I'm lucky enough that the second circuit is not damage.😅 Can I use hot glue to replace that RTV silicone? I cannot find RTV silicone in my area.
Great video. Do you reapply silicone on the mosfet leads after replacing? Also how do rivets prevent solder from cracking?
@norcal715
9 жыл бұрын
+mrsemifixit No I do not reapply the silicone. I think it is detrimental for the life of the solder bond. The leads are not allowed to move with thermal expansion and contraction. I haven't had a conductive dust problem in a long time but I have had at least 5 of there sets fail because of the silicone. The rivets allow more solder to be "wicked" between the lead and the rivet.
@markcummings150
4 жыл бұрын
NorCal715 what about applying pcb lacquer spray. That should insulate the leads and allow movement from heat expansion.
I have the same board and my PFC isn't working. I only get 160V on the filter capacitors, should be around 400V. Any idea what is most likely to cause this failure?
@slagdemon
7 жыл бұрын
Mike, I have the same problem. Did you get this figured out? I used a 470 ohm resistor instead of a 220 ohm one but it shouldn't matter.
thank you very much!
What can be damaged if both va and vs voltages are incorrect? voltage very low. Before was short.in X buffer, i replaced one of IGBT.still no picture. Found that voltage on power board not good.
Hi, do you have a schematic for this model? please message
Samsung ps60e6500. Rarely starts and stops after 1 minute.Can u help me pls. Hear back three blasts in succession and then the red led blinking.plsss
Nice job, thanks.
I have a same P.S. uniti this one has PFC voltage. Doesn't have VSUS . shorting one of the optocouplers fires the VSUS voltage, will like to fix it, but need schematic of the Power supply. BN44-00445A
i just had one of these on the bench, two main fets were dead short, looked at the pfc section under a microscope though and nearly every component without a rivet had hairline fractures in the solder fillets, i'm usually a fan of single sided boards for the ease of rework but someone obviously didn't think about thermal expansion when they wave soldered these. even the jumpers had sunken fillets and microscopic cracking. talk about absolute garbage.
Very nicely done! This helped me a lot Thank You!
good work am engineer where can get good kit like your own to buy
i have a 42'' samsung plasma the modle number is pn42c450B1D the ploblem i have is when i turn power on is it blinks few times and clicks then the red light stays on but tv dont turn onand if i unplug the buffer bord and the other bord on other side of tv then the green light blinks few times then goes out and stays out and if i unplug just the bord on other side of tv and leave the buffer boed and bord attach to that plug in then same thing the green light flashes cuple times then goes out and stays out and if i unplug main boed then nothing hapens and if i test high voltecge on multie meter it goes to 3.5 then down to ooooo and when i test the low voltage it just stays at 000 any ideas
Great video!
amsung BN44-00264A POWER SUPPLY jais 12.51 volt and 5.50 I have not found the 13 volt can you tell me what its little being ?? what is it about??? The capacitors its okkk als are okk
Are these boards super cheap in the construction? I have like 10 computers in a LAN than have been running 24/7 since 2009. (6+ years) They have have complicated setups with Video cards, Lan cards, raid cards etc. Not one has failed in years. Yet these cheap Samsung TVS seem to blow up on regular basis. Cheap solder? I mean why do resisters constantly burn up? Why are power supplies and main boards failing at such high intervals? My computers were much less money have similar boards yet they don't fail. What gives here?
@kavajamusic5411
5 жыл бұрын
They make they cheap. If their tv`s last 10 year, Samsung would faliment
Fantastic where can I learn to repair electronics like you do ? Thanks please let me know..
@vernonbosshard9317
2 жыл бұрын
Check out my latest post, I have a 2 yr degree, I would like to teach what I know but no one around my area has any interest in this stuff, in school they said it was a dying profession. I think they may be right.
Static electric precautions is the last thing to worry about when working to these beasts.If the flat ribbon cable coming from controller for example is not connected to the side boards then board will burn transistors rapidly.Intermittent failures which are difficult to locate also occur.In general the plasma tv's are the worst type of television ever made and are the hardest for service operations even for professionals with many years of experience.
@norcal715
2 жыл бұрын
You are correct, I have been doing electronic repair since the early 80's. Plasmas were great when they worked but a B!TCH when they failed
Great!
Thanks for this share mine have cp817 blowed then melted cp816 pleaze did anyone can tell me the value of these 2 blue ceramic cap . thanks a lot
@Boems3l
3 жыл бұрын
both R 471K 1KV
OUTSTANDING!
Can I install a fan somehow? Maybe fabricate one over the power supply board?
@norcal715
2 жыл бұрын
I have done that to my personal sets in the past. If you change the configuration, you may be liable if a defect occurs.
@johnglover8419
2 жыл бұрын
It was a free tv. 60" Samsung plasma. I'm sure power supply board is bad. They replaced the main board then gave up. I'll try to find a schematic and see if I can work a small fan over the PSB. Or make it never work again. Lol. Thanks!
Why oh why use a single sided boards for a power supply. Heavy components and hot components cause a lot of joint stress =failure! Noted many areas of the board show signs of overheating..the tracks are brownish. What you can do is fit thermal pads between chassis and PCB in the hot areas. Try T-Global.
Is that a p channel mosfet Sir tnx
Really great;-) I love your Videos;-) You really have much of a clue. Although I have not learned it'm just Painters But I'm learning in this area every day like this it;-) gives me a lot of fun and joy;-) Thanks for your great videos.
Very informative
Good video! Thanks.
Great job
What do you mean "add 1M resistor to your soldering iron". How did you do that?
@peshmadscientist1833
5 жыл бұрын
The wire in the soldering station base that grounds the tip to the earth ground of the line cord is cut and a one meg-ohm resistor installed instead. (as in joining the two cut ends together with the resistor) This gives the tip the anti-static protection and will prevent an apocalyptic short if you accidentally touch a live area on a chassis with your iron.
love your videos!
Nice video!
sir great explanation....i understand all about....tnks for sharing
How come just about every tv repair on you tube is a Samsung ? Are they junk
@Physics072
8 жыл бұрын
+Colin Riley I would have to say YES many samsung use junk boards with bad caps and NON Lead solder which cracks easy.
@jesusrosales4112
3 жыл бұрын
But should state its what sells most and is worth fixing.
Good job. :)
BN44-00447A is my Power Supply,, is it the same ...Looks like... thanks
Ice zoom picture
Nice vai
Samsung plasma 6 blinking problem
Or for people who use the phonetic alphabet. Bravo, November 44-00445 Alpha.
nice video thank you..................
Cheap Chinese made components insted Of Japanese made components just to save a buck on each TV. I know thats a stretch at gussing whats going on. But it probably has some facts to it. I wont watch anything but a plasma TV and my oldest unit is over 18 years old working without a hitch, but my 1080p unit i belive uses this power supply Now I understand some of the basic electronics behind this repair but you did some serious board leval repairs. People dont do this anymore they just want to swap boards. I can take a guess and belive its my power supply or crack it open and test componets to find the problem and fix it. This was a 60" budget TV nothing big deal about it. Now becuse I can buy new sets at dealer cost should I bite the bullet and go with qled? They use a lot less power and my sets been turned on almost constantly its whole life, last time I turned it off it was hard to get it to turn back on over a year ago. If it comes on it works. This leads me to belive its bad solider joints. As most of these boards run down an assembly line then over a solder bath then washed off with water. Im going to bet every component was placed by robots. Most of these are not hand soldered anymore and this power supply works on that whole skew of models from 3d to normal on the plasma line mines a 60" i belive the 47-60 all used the same power supply. Other components would have been differently made. Like the x and y boards. Im just gussing. Plasma were supposed to last 35 40 years. Not like the old CRT or tube type sets. And they gave a lot better picture. I remember changing tube in the 1960s tvs but that stuff would be impossible to find today. Unless you have a Marshel Amp. I belive the tube cost 110 to 140 bucks each now. My what solid state has done for us. Don't touch the flyback! You won't live to talk about it. I take it the output voltage is dc volts or was it ac volts and low amperage? Not sure i want to probe a plugged in board. Its still 120 volts ac. The power supply drops and bumps the voltages for differnt circuits. Depending on the needs.
Great video. I have a Samsung 60" plasma that cuts off after a minute or so. Picture is great when on. You think its a similar problem. Zeke15
@Gfunkbus76
5 жыл бұрын
Did you fix yours?
SAP
aap
Samsung now makes barbage tv`s
Hello please Mr.Norcal i have exact issue shorted QP804 easy to read part# 6R190C6 but shorted diode DP804 ...etc my problem is QP806 is shorted open resistor 47,20 ohm...etc , instead of asking you for QP806; QP805 PART #? CAN YOU tell me where to get this BN44-00445c schematic? if canot then WOULD YOU PLEASE GIVE ME PART # FOR QP806, QP805 And my last is QS802 that drive the opto isolator . please replay me if you can to save me from yelling wife for opened tv every where in the house :) ! have a great day sir
Hello please Mr.Norcal i have exact issue shorted QP804 easy to read part# 6R190C6 but shorted diode DP804 ...etc my problem is QP806 is shorted open resistor 47,20 ohm...etc , instead of asking you for QP806; QP805 PART #? CAN YOU tell me where to get this BN44-00445c schematic? if canot then WOULD YOU PLEASE GIVE ME PART # FOR QP806, QP805 And my last is QS802 that drive the opto isolator . please replay me if you can to save me from yelling wife for opened tv every where in the house :) ! have a great day sir
Hello please Mr.Norcal i have exact issue shorted QP804 easy to read part# 6R190C6 but shorted diode DP804 ...etc my problem is QP806 is shorted open resistor 47,20 ohm...etc , instead of asking you for QP806; QP805 PART #? CAN YOU tell me where to get this BN44-00445c schematic? if canot then WOULD YOU PLEASE GIVE ME PART # FOR QP806, QP805 And my last is QS802 that drive the opto isolator . please replay me if you can to save me from yelling wife for opened tv every where in the house :) ! have a great day sir
Hello please Mr.Norcal i have exact issue shorted QP804 easy to read part# 6R190C6 but shorted diode DP804 ...etc my problem is QP806 is shorted open resistor 47,20 ohm...etc , instead of asking you for QP806; QP805 PART #? CAN YOU tell me where to get this BN44-00445c schematic? if canot then WOULD YOU PLEASE GIVE ME PART # FOR QP806, QP805 And my last is QS802 that drive the opto isolator . please replay me if you can to save me from yelling wife for opened tv every where in the house :) ! have a great day sir
Hello please Mr.Norcal i have exact issue shorted QP804 easy to read part# 6R190C6 but shorted diode DP804 ...etc my problem is QP806 is shorted open resistor 47,20 ohm...etc , instead of asking you for QP806; QP805 PART #? CAN YOU tell me where to get this BN44-00445c schematic? if canot then WOULD YOU PLEASE GIVE ME PART # FOR QP806, QP805 And my last is QS802 that drive the opto isolator . please replay me if you can to save me from yelling wife for opened tv every where in the house :) ! have a great day sir