Question about Philips 42PF7220A 42 in. Plasma Television

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No Picture and Red Blinking Light

As I was watching my MSU Spartans blow a possible win against Wisconsin, the picture went out. There was still sound, but that is not relevant because its through a receiver and not the TV speakers. The TV normally has a green light illuminated in the lower left. Now there is a red blinking light (7 times) and the TV is not responding to any TV buttons or remote commands. If I unplug and plug back in, the lower left light is green for a couple seconds then reverts to the flashing red light. Out of warranty btw. Any thoughts?

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  • angrybob Sep 30, 2007

    I just called the service center and they stated they thought it was an internal power supply. I found the same from other search results.

    Mine is a refurb with a 90-day warranty purchased in Feb 2007. They said they might still honor it.

    We'll see.

    Is an internal poer supply on a plasma similar to a computer. I'm pretty good with mechanical and electronics...when I have to be. I am trying to avoid a hack or a gotcha dealer.

  • angrybob Oct 16, 2007

    joavaro - thanks for your input. 



     



    Philips has sent over a licensed tech on their nickel even though its out of warranty.  They came today and took the set with them.  The tech said it would be ready in 7-10 days w/o saying what's wrong.



     



    Who knows.  If I get it fixed w/o any cost to me, I'll be somewhat happy.  I say somewhat because I now have buyer's remorse as to the quality of the set now that I have read deeper into all of the problems that Philips plasma's have.



     



    I think its too late to get an extended warranty which I would buy if I could.  The fact that so many refurb's were available should have told me something...

  • AngryCustmer Feb 19, 2008

    No Picture and blinking red light (7 times).
    It's about 15 months old so it's out of warranty. After reading posts I'll take the back off, check fuses and look for any circuit shorts.

    From the look of it the most common suspect is the power source.

  • Nathan W Jul 24, 2008

    I also have the Philips 42PF7220A and have the same issues, with the screen at first going blank on the bottom half then the screen completely died and now won't turn on even after performing a system reboot. I want to know what other have replaced to fix this issue. I am more than competent with electronics and can replace any components as required. I would really appreciate any direction that has already worked for others.

  • Anonymous Apr 03, 2009

    above ^
    you are ***

  • Anonymous Apr 16, 2009

    Normal 0
    I did buy one with this problem to begin with. I returned itand got same one with out the problem. 2 years later… red light is blinking. Nopicture, no sound…

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I had this problem on a 42" Philips Ambilight. After reading in another forum, opened up the back, and found 2 leaking capacitors on the center circuit board (main power supply pc board) toward the bottom. Tops of the capacitors were bludged out (10v 3300uF) and leaking electrolytes. Unsoldered the old ones myself, went to Radio Shack. They were out, so order 12 on ebay for $6.63 including shipping. Resoldered and works fine. Can't do it yourself? Take the board out (just unhook the cables & unscrew it ), and take it to a computer shop or tv repair or someone who knows how to solder, and have them change them. Piece of cake!

Posted on Oct 01, 2009

  • joerobin0828 Oct 14, 2010

    Yes this works and is very easy don't be scared. most electronics can be fixed by replacing capacitors, but the question is whats making them pop?

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We have 7 times red blinking light. Changed the capacitors like many others did, unfortunately it did not solve the problem for us. So we don't know what to do next, change the SSB-board, Y-board? What if it dosen't work either, all those boards cost $150 or so, changing everyhting it's beter than to buy a new tv... Anybody have any advise, if the capacitors were not a problem, what could be???

Posted on Jan 19, 2010

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I am slightly technical minded and was able to get my friend's plasma fixed for $20 by fixing the capacitors as mentioned above. I did not do the soldering myself but the fix was as easy as unplugging the tv for several hours, taking off the back panel, finding the blown capacitors, taking all of cable harnesses off the board, taking all of the screws off that were holding on the board, taking the board in to Professional Television Analysts in Oklahoma City (any local repair shop), and having them solder two new capacitors on. The gentleman there was able to use to 16V capacitors from a used board and did not charge me for them. He told me that the 16V, instead of the 12V would probably work better. Total of 45 minutes for me to take apart and put it back together . There is an excellent thread with pictures about it here:
http://www.avforums.com/forums/plasma-televisions/400763-philips-plasma-repair-advice-thread-12.html
Good Luck!

Posted on Nov 18, 2009

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Plasma TV blinks red LED 7 times, no picture, no sound.

 

I have the same issue with my plasma tv model 42PF7320A/37 and by process of elimination, this are the results: replacing the power supply board did not make a difference.  I've been reading about people that contacted Philips and they have replaced the SSB (Main Logic Board+Output/Inpunt Signal Board)

 

I'm about to replace it in a couple of days but them I ran into something I'm suspecting of and that is Y-Main board.  I begin my diagnostic by disconnecting power to one board at the time and notice that power use to shutdown at the Y-Main board.  I had a problem with the TV before it completely died and that was the lack of video signal at exactly half bottom of the screen.  Read this also:

"

Philips has no such code for telling you what is wrong.  What it does tell you is that somewhere in the set a shorted condition has occurred which was detected by the protection circuit; the protection circuit then shut down the set in order to prevent further damages from occurring.

So, one cannot tell what is wrong without defeating the protection circuit and firing it up at least long enough to tell where the problem is.

Mostly, when a set shuts down it is from one of the high current draining sections of the tv.  Those are the high voltage and horizontal sections.  The vertical deflection amplifier, the audio amp and the main power supplies can be the culprits as well.

The video processor chip does not usually cause the system to shut down."

 

Good luck!

Posted on Oct 15, 2007

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Joavaro,

Did you ever figure out what is causing it to shut down? Mine seems to be doing the same thing and the place where I can order parts has a Y-board in-stock. Did this fix your set? Does anyone know?

Posted on Jan 06, 2008

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I replaced the two capacitors from digikey.com in about 30 minutes and the tv has been working great for a month now. Looks like it did the trick.

Posted on Dec 04, 2009

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Your power board may have more things wrong like a bad SMT fuse and or other unseen caps, or the SCR's themselves (usually not because their spec ratings are high). Try replacing the board but be careful at getting the exact one because the versions change and can cause instant failures when replaced.

Posted on Jan 02, 2015

I to now have the same issue... the power flickerd during a storm and I am no experiencing the same issue.

Posted on Aug 06, 2008

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