Philips 42PF7220A/37B Plasma HDTV

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  • PlainBill
    Badcaps Legend
    • Feb 2009
    • 7034
    • USA
    #1

    Philips 42PF7220A/37B Plasma HDTV

    I picked this up through Craigslist, and it is a heavy sucker. The seller reported the 'flashing red light at startup problem', but could not reproduce the problem in his garage. I got it home and after it cooled off (the temp in his garage was over 90°F) it would intermittently begin flashing the red light at startup. If it did start, it seemed to work OK for a 4 year old plasma set. (The panel has some 'burn' from displaying predominately SD images)

    Opening it up, I found a pair of 3300 uF, 10 V Samhwa caps in the power supply had bulging tops, the typical cause of this problem. NOW comes the problems.

    Searching for '42PF7220A flashing red led' produces numerous hits. Most indicate the typical result of these caps failing is the red light flashing 7 times. This flashes a code 63, which indicates a panel failure. Is this a case of a noisy power supply generating errors, or is this beast going to die shortly?

    The power supply seems to have a mixture of Samwha and Samxon caps, with possibly other brands mixed in. Samxon seems to be generally regarded as a good brand, but I wasn't able to find a definitive answer on Samwha. Any opinions? I'm quite willing to replace all the caps IF I could be confident the panel is going to last.

    PlainBill
    For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

    Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.
    Tags: None
    • PlainBill
      Badcaps Legend
      • Feb 2009
      • 7034
      • USA
      #2
      Re: Philips 42PF7220A/37B Plasma HDTV

      I've replaced the two caps. This requires removing and replacing about 60 screws. This fixed the turn-on problems and resulted in an improvement in picture clarity. The small amount of screen 'burn' is still visible, but not particularly obtrusive. The TV is now in my wife's office. The final accounting is:

      Used, semi working 42" plasma TV $100.00
      Two capacitors, including shipping. $4.16
      An appreciative wife - priceless!!!

      The only downside: Soon hints will be dropped that replacing her DirecTiVo SD-DVR with a DirecTV HD-DVR would be much appreciated.

      PlainBill
      For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

      Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

        Comment

        • Krankshaft
          Badcaps Legend
          • Jan 2007
          • 2328
          • USA
          #3
          Re: Philips 42PF7220A/37B Plasma HDTV

          I think I heard that Samwha is an ally of Nippon Chemicon.

          Though I still regard them as mediocre caps (like Teapo) at best.
          Elements of the past and the future combining to make something not quite as good as either.

            Comment

            • PlainBill
              Badcaps Legend
              • Feb 2009
              • 7034
              • USA
              #4
              Re: Philips 42PF7220A/37B Plasma HDTV

              Originally posted by Krankshaft
              I think I heard that Samwha is an ally of Nippon Chemicon.

              Though I still regard them as mediocre caps (like Teapo) at best.
              The opinions I found here went both ways.

              PlainBill
              For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

              Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

                Comment

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