Question about Philips 30PW8420 TV

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Tv shuts off and won't turn on

We have a 30" philips hdtv model 3pw8420/37. the first time we had the problem with the tv the tv just shut off by itself and a white horizontal line appeared on the tv. So we sent it to a tv repair shop. they keeped our tv for months. they had repaired the parts and soldered connections but did not tell us what exactly went wrong with our tv. got it back and the tv went out again the same as the first time. sent it back for the second time and this time they said they had replaced the pix tube. It lasted for about 16 hours woke up the next morning to watch tv and it came on and once again the same problem it just shut down. please help do we get rid of the tv or do we send it somewhere else

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  • Anonymous Feb 17, 2008

    we have a philips 30pw8420/37 It simply turns off by itself. If we turn it on, we see the green light but it blinks and then turns without seeing a picture or sound

  • Anonymous Apr 07, 2008

    I have the same problem as the 2d person. I turn on the TV, it shuts itself off, and the green light blinks intermittently. If I wait a long while and try to turn the TV on again, it turns on for a few seconds, then repeats the pattern. I have also unplugged it for 2 extended periods to see if it would reset.



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Sound like vertical section problem, need to replace back same same # vertical ic& importance thing need to check component around ic like capacitors & resistors.then the vertical section be working fine. good luck!

Posted on Apr 29, 2010

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The tv first it had a verticle problem. now a set has a power supply problem, they have to check for a light semi conductor values, for diodes and transistors. the electrolitic capacitors after the 95-110volts ht from the power supply be checked and measured, rectifier diodes be checked for leakages. a picture is not aproblem .thanks

Posted on Mar 20, 2009


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