Question about Dell W4200 42 in. HD-Ready Plasma Television

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Power Board Can amyone point me to a picture of the power board? I look at merchatns-direct but they only have a power supply for dell w4201c

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Y SUS and Buffers are usual culprit.
You can get it from guy at
He has everything for Dell TVs!!

Posted on Aug 28, 2009


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It has a picture but it is jumping what do you think could be wrong with it?

There can be many things that can cause a jumping or unstable picture. The power supply is the starting point. You would have to be able to monitor the voltage outputs to determine if there is instability.

Then there is the testing of the circuit boards by monitoring the proper waveforms, as per indicated in the service manual. You will require the proper test instruments for this. Once the defective board is found it will have to be replaced.

If the set is out of warranty, it may be more worth while to replace it. Servicing out of warranty can be too expensive to be cost effective.

Sep 30, 2014 | Dell W4201C 42 in. Plasma HDTV

1 Answer

Only get black lines, no real picture

Known on this model. replace the main tuner board and check for two LARGE capacitors that have failed on the power supply. This will correct your issue!

Thank you and best of luck~

Jul 11, 2011 | Dell W4201C 42 in. Plasma HDTV

1 Answer

No power-will not turn on at all. Dead. Switch inoperative.

Check the power outlet source?Yes,tries websites like, to buy a refurbish power supply board for the replacement.That the board,Where the power a/c cord plug into it.

Jun 30, 2010 | Dell W4201C 42 in. Plasma HDTV

2 Answers


Most cases the Y-SUS, Y upper buffer, and Y lower buffer is the problem. The replace the 3 boards are located on the left side of the chassis when you open up the TV. 90% of the time this will solve the problem.
Look for burn marks on the upper and lower buffer boards (mostly around the chips with the heatsinks on them).

Apr 01, 2010 | Dell W4201C 42 in. Plasma HDTV

1 Answer

Dell W4201C half black screen

It should be easy enough for a Novice to fix.
Most likely the TV has a power supply related problem. The most common thing to go out is the circuit board that supply power to the screen. Commonly called a Backlight Inverter Board.
But, I can't say it's 100% the problem because I can't actually look at the tv over the internet.
If by chance the TV is still under warranty, go that route.
If not under warranty and If you have some electronic experience, if you can find and purchase a Service Manual over the internet and diagnose the source of the problem and fix it by soldering in the new part. The Service Manual will give you circuit diagrams, test points, and part# lists. Usually, cost under $20.

I hope I shed some light on the subject for you.

Jul 03, 2009 | Dell W4201C 42 in. Plasma HDTV

3 Answers

Dell w4201chd 42" Plasma Tv.

OK, you need to replace the Power Supply Board.It is made by Samsung the number on the board will be LJ44-00110A. The Replacement number is LJ44-00019A,the cost is $349.00,however this part also crosses to a Phillips number 99500042146 which sells for $289.00 these are all the same board.I use the Phillips Board.Most repair shops will not do any research to locate these boards due to time and volume of repairs the have to deal with.Most call Dell and they won't give out repair info.They require it to be sent in.The Phillips board can be purchased from any NAP distributor.

Feb 11, 2009 | Dell W4201C 42 in. Plasma HDTV

5 Answers

No picture or sound but it is on

i have a 50in plasma that just went out the other day the tv comes on but without pic and sound how can i fix it

Jan 24, 2009 | Dell W5001C 50 in. Plasma HDTV

2 Answers

Dell w4201c burning fuse...

hello, definitely if your fuses are blown and your not able to circut trace and find the fualty compnents on the pb then repalce it with a working power supply this may help but also keep in mind you may want to check everything out first get your models service manual so you can verify voltages at test points. something is cuasing the fuses to blow so if you do change the power board and you blow the fuses again then you will need to trace the circut and find out where the short is and what panel or part is cuasing it .

hope this helps

Jan 10, 2009 | Dell W4201C 42 in. Plasma HDTV

2 Answers

RE: Dell W4201C


a few things, on checking the ground, are you sure you have a good connection (try scratching or pushing harder with your probe tips) to ensure that is 0v they should all be reference gnd which is 0v

did you know that there are two (2) power supplies? This set has a power and sub power supply, did you check both?

I tried to look at your posted pic, but that site blocked your image (no hotlinks allowed)

Jul 29, 2008 | Dell W4201C 42 in. Plasma HDTV

2 Answers

Plasma no picture, fades to black from startup logo

I finally isolated the problem, the problem has to do with the Y SUSTAINER BOARD not receiving enough/necessary voltage when turned on, while initially thinking it was just the yboard was the problem, i replaced the Y sus board with no success, with only further diagnosis, i discovered the board voltages coming from the powersupply, there are 5 voltages that relate to the Y sustainer board, VA, VSC, VS, VE, VSET. they all supply a certain voltages that all have to be supply the correct voltage in order for the y sustainer board to be working, well guess what, the VA line, which for my set needs 70volts, which upon startup quickly drops from 75volts to a jumpy 8.5-9.5 volts, which of course is nowhere near the 70 volts needed, so this quick drop in voltage is directly related to the screen fade upon startup, i found the problem now the real problem is finding a replacement power supply. hope this helsp anyone with similar issues.

Mar 02, 2008 | Dell W4201C 42 in. Plasma HDTV

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