Question about Philips 50PF9956 50 in. HD-Ready Plasma Television

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Philips 50" HD plasma 2004

If i turn the power off from the tv or tv remote the TV needs to be restarted dozens of times to stay on. The relay clicks and the tv turns on. A red light blinks then I can turn on, grren light comes on the relay clicks and it turns off. If I do this 20-30 times it will stay on then I just turn power off on cable box and leave TV on. ALthough screen is black..... Picture looks great once it is on...just a pain in the @#S

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SOURCE: 50 inch plasma blank screen

I bought my Philips Magnavox 50" plasma in June of 2007. In february of 2009, I noticed increasingly longer delays in the video coming on after turning on the power and then the audio began to delay coming on. After a few weeks of this problem the audio and video then stopped coming on at all. However, there was power going to the unit because the green power light was working. I noticed over 50 other consumers on this website had the same problem. WITH THE HELP OF OTHERS ON THIS WEBSITE, I HAVE FIXED THE PROBLEM FOR $40. YES, FOR LESS THAN $100.00 I HAVE A WORKING HDTV AGAIN, BUT WITH NO THANKS TO PHILIPS - MAGNAVOX. THEY WERE USELESS. 


1. Unplug your power supply cord.
2. Remove back panel on your HD.
3. Look for capacitors that have a bubbled or slightly raised and rounded top. This indicates the capacitors have overheated or leaked and need to be replaced. The normal look is a flat surface with no raised features at all. (I had two bad capacitors that were side-by-side and identical: 3300uf 10v. Also, they should be located on the power supply board. My power supply board is in the middle of my 50" plasma.) 
4. Go to an electronics repair store or Radio Shack and see if they carry your capacitor type and size and replace them yourself if you are comfortable with removing the capacitors and soldering new ones to the power supply board. The capacitors will cost you $2.00 each or less. 
5. I was not comfortable replacing the capacitors myself so I removed the power supply board by removing the screws and unplugging several wire connections. This was not difficult at all. I then brought the power supply board to a local electronics shop that did repairs on HDTVs and simply asked them to remove the bad capacitors and solder two new capacitors onto the power supply board. They did it for $40, which included cost for the 2 new capacitors, while I waited and it only took about 10 minutes.
6. I replaced the power supply board and back panel of TV and it worked!!!

Some people on this sight suggested replacing the capacitors with some that have higher temperature ratings. Based on that advice, I wanted to replace my two that were bad (3300uf 10v) with two rated at 4700uf 35v, but my electronics guy suggested against it. Instead, I replaced mine with 3300uf 50v, with the only difference from the original parts being the higher voltage (50v instead of 10v). I figure if the problem occurs again, I now know I can get it fixed for less than $50.00. Philips - Magnavox should be ashamed for such poor customer service and not telling people about this simple fix. When I called their customer service support number I was simply directed to a repair place --over two hours away!!! 

Posted on Mar 05, 2009

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SOURCE: I need manual catalog for my philips 50" plasma tv

I need manual catalog for my philips

Posted on Apr 28, 2009

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SOURCE: I have a Philips 50 inch plasma tv. The light is

I have Philips 50 inch plasma TV purchased almost exactly 3 years ago. Completely out of warranty. Paid 1999 bucks for it new. Now Plasma TVs similar to this are 800 bucks. I figured the cost of a repair tech coming to the house would be around 500 bucks.. so I decided I could "do no harm" and look at the power supply. Sure enough, two 3300 uF caps were swollen.. I am far from a true electrical repair person, and if it were not for the caps being swollen, would have no idea that they were bad. I am however a little bit skilled in soldering. So I ordered replacements for about 8 bucks. The caps were actually only 1.50 ea. but the min order fee and shipping brought it to about 8 bucks.. I got them from . They came in today and installed them... to my astonishment, my TV works as good as it did when it was new... I must say that I am dissapointed in Philips.. and will never buy another product from them. If it is out of warranty.. they will not even talk to you.. I don't think it is too much to ask when you spend 1999 bucks on a product from them.. I expected my TV to have more than 2.999 years in life in it. Thanks a million to this site for providing soulutions for folks..

Florence AL

Posted on Oct 03, 2009

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SOURCE: Plasma Philips 50

Ur power board have burn capcitors,like puff up or burst open,must changes these capacitors.Know how to solders?Tries, for buying reburbish power board.

Posted on Jan 11, 2010

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SOURCE: 50 inch hd plasma cuts off for 15to 20 seconds at

This model has issues on the power supply with some bad capacitors. If it's under warranty, take it in to be repaired. If it is not, then you can replace them yourself (the two to replace are shown). This may solve your problem. There is also an issue with this model and the buffers but if the picture wasn't going in and out, it shouldn't be a problem.


Posted on Oct 08, 2010

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SOURCE: I have a 50" plasma Philips tv 50pfp5332d/37 it

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Posted on Aug 30, 2011

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This is a plasma unit and philips plasma's are nortorious for bad power supplys, your problem may very well be the power suppy in the television, it is possible you blew a low B+ fuse on the power supply. There is also a issue with the Y-sustain board failing in this model, If you open the back and looking at the unit from the rear the y board is on the left side of the unit and the PS is in the center. disconnect the Y-sustain power plug from the power supply and turn on the unit if the unit stays on with no red light then the y board is bad. it does the same then replace the Power Supply.

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try to press and hold the power button for 15 seconds and then restart your tv. if it doesn't work, you might need to turn it in for repairs.

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Any big screen tv shops can repair this tv power supply board issue.The shops prices are depend on them.But useally the repair cost will be a third or half of the priced of a new tv.

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If you don't have any green lights anymore on the power supply PCB, replace it (part number LJ44-00118A, can be found on-line for approx $180).

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Try swapping the HDMI cable. They occassionally fail.

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