Question about Philips 42FD9954 42 in. Plasma HDTV

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Model 42PF9631D/37green light turns red and TV gose off

OK so I'm not the only one who is having the same problem with this Philips Ambi light plasma TV. ( red light blinking 7 times with no picture or sound,) I'm not sure how to open the TV and replace the part, to have this problme after only 3 years, I queastion if it's worrth getting fixs, could someone tell me if there's a recall on these TV's

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The power supply board answer is correct. However, depending on your model, the part may not be available or maybe you don;t want to spend a couple hundo and have some basic electronic skills. The following is an inexspensive and effective alternative.

I have a NEC 61" plasma with the same problem. However, I couldn't find the part I needed (the power supply board) except at NEC and they wouldn't sell me one since I was not azn authorized repair center.

So I checked the board, by simply measuring the resistance between connections, and discovered that 2 MOSFETs on the board,used for power switching, were defective. These transistors have been discontinued but were available still from the manufacturer. I replaced 3 of them for .75/ea and the TV is working beautifully now. The part number for the MOSFETs is FS20SM-5 and available directly from Powerex. I suspect many plasmas use this series (FSXXX-X) of discontinued transistors on their power boards thus the mulitudes of similar complaints and the discontinuation.

Posted on Jun 20, 2009

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You have a defective power supply,this is a common problem with this set, go to and you will find it; the price is about $200.00 dollars. it not hard to replace i believe you can do it yourself. good luck

Posted on Jun 15, 2009


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Related Questions:

2 Answers

Blinking red light and tv will not turn on.

problem on power supply , u may have 2 bAD capacitor

Apr 14, 2010 | Philips 42PF9631D 42 in. Plasma Television

1 Answer

My plasma philips tv dosent turn on and red light blinks 6 times

Power supply board have dead capacitors.U know how to solder?Replaced these capacitors that bulge up,puff up or burst open.Should get ur power back.Or replaced a whole power refurbish power supply buy it at,

Feb 06, 2010 | Philips 42PF9631D 42 in. Plasma Television

1 Answer

Philips 42pf9631d/37 6 slow red flashes and 3 fast

6-7 blinks means there is an issue with the power supply...
I found a replacement for my 42pf9631d/37
Part # Lj44-00117A
at TSM Inc. for $110.95 with free shipping...

Jan 28, 2010 | Philips 42PF9631D 42 in. Plasma Television

2 Answers

Philips 42PF9631D 42 in. Plasma Television TV wont turn on..I get the initial green power light, but it quickly goes to a flashing red light (flashes a series of 4 times). Philips tech support is a joke....

Philip have alot power problems with their tv.Check power board for puff up parts like Capacitors,or rust in cracks or soldering.Changes parts or the whole power board.

Jan 08, 2010 | Philips 42PF9631D 42 in. Plasma Television

1 Answer

7 red flashing lights, won't power up..

Check the power board for capacitors with the tops bulged up. They are 3300uf 10v. There are either 2 or 4 of them depending on your set.

Jun 01, 2009 | Philips 42PF9631D 42 in. Plasma Television

1 Answer

7 red flashing lights, won't power up..

Check the power board for caps with the tops bulged up. 3300uf 10v.

May 16, 2009 | Philips 42PF9631D 42 in. Plasma Television

2 Answers

I have a Philips plasma TV model #50PF9731D/37 with a weird ambi-light issue. When I first turn on the set, the ambi-light functions on both sides. But after I introduce a signal (cable and PS3 use HDMI...

Unfortunately the 'green line' issue mentioned in the review appears to still be happening on screens that are shipping to end users. (It's been documented in detail on AVForums).

Hopefully this should be rectified by a firmware change (simply being able to adjust the picture vertically as well as horizontally would help).

The clearlcd technology is new for philips

VERY VERY COMMON IN PHILIPS!!! People all over the internet are noticing the same problem. Philips is still working on it. I will let you know as soon as they have a solution.

Jan 17, 2009 | Philips 50PF9630A 50 in. Plasma Television

2 Answers

TV will not turn on, the light goes from green to red.

I own the same model. You have 1-2 Blown Capacitors. Take off the back cover, And look towards the center of the main power board. Look towards the center of this, and there are 2 capacitors side by side. You should see them swollen at the tops, even maybe a little black residue that has come out. I soldered on 2 new ones, and bingo! I would suggest replacing them both.

Dec 13, 2008 | Philips 42PF9631D 42 in. Plasma Television

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