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I have a Philips Plasma 50PF9431D/37 shuts off/red light blinking

I've searched around and most say something is wrong with the Y Main or the Buffer. I opened the TV and I found 2 blown caps on the Power Supply Board. So, I'm wondering if that is the issue and not the Y Main like everyone is saying. I would appreciate the help, thanks!

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  • SD Tech
    SD Tech May 11, 2010

    power supply problems can cause other problems--replace the caps---the boards for this set are very expensive--if you found buldged up caps on the power board you may have found your trouble.

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If the caps you are talking are numbers C8059 & 8060 rated at 3300uF @ 10v then yes that can be the problem. You can use a higher voltage rating( 16v,20v,) but DO NOT change the micro farad (uF) rating. You can do a search for the caps but www.mcmelectronics.com has alot of parts. Go to service parts and components in thier website and then search under capacitors.

Posted on Sep 07, 2009

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The TV is forced in standby because an internal fault has been detected. 6 blinks slow and three fast blinks points at defective Ysus board or defective buffer. The power supply must also be tested. Till now the TV was starting because when you disconnect power you discharge internal components. Some of the components have the role of storing charge (the capacitors). If a capacitor is defective the TV may still work as other components will compensate the function of the faulty part. After a while more components will fail and the TV will not start anymore. To fix the problem the TV must be tested at component level. Testing will start from PSU voltages to YSus and buffer boards.

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