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I have a Philips 42" plasma TV model #42PF9631D/37. The tv would not turn on only red led light flashing 7 times. I replaced the capacitors as instructed in a blog on this site. When reconnected it still won't turn on and red led flashes 4 times. What can I try next?

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  • Bruuhaa Aug 05, 2010

    Not much help. If I put a volt meter to the board it will tell me the same thing as the red led on the front of the tv. No power coming out of the board. Is there another capaitor I should be looking at or maybe a fuse problem?

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  • Master
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Just because the capcitors has blown does not mean just replacing them will fix the issue, if the capcitors blown and was really bad you going to need to go a step further and check the power supply fully meaning ic's, relay, High voltage transformer ect ect. its hard to tell what it is from email so I hope we have some understanding.



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Posted on Aug 05, 2010

  • Grand Canyon Tech
    Grand Canyon Tech Aug 05, 2010

    I am sorry I was not much help to you, Seems liek the problem was not fixed when your replaced the defective cap's, If there are fuses on this board they would be thermal fuses there rectangle in shape and are usually blue you will need a voltage meter to see if the fuse is bad or not, you might have to end up replacing the whole board only time will tell. I would not suggest throwing parts at this guessing you be paying more then the cost of the tv doing so.



    Genrally I like to say this I am not there I cannot see the board effected nor can't I test over email I only can suggest where to take it form here so I hope you understand,

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I would test the power board. The power board is usually sold in one piece. Check the power going from the power board to the main board with a voltmeter. There should be a label on the tv with the DC voltage output

Posted on Aug 04, 2010

  • Henry  Thomas
    Henry Thomas Sep 28, 2011

    Your tv goes into a high voltage shutdown.which means that the high voltage has exceeded 33k and the unit goes immediately into saftey shut down check your power supply regulation.and your horizontal circuit.but with these kind of tv you will have to buy the power supply module and replace it with the old power supply.no use of doing any repair.

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