Question about Philips 42FD9954 42 in. Plasma HDTV

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Power on but not busting [no eht]

The indicator light comes up and changes to green when powered but there is no light on the screen and the indicator light goes back to red.

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Re: power on but not busting [no eht]

It measns that there is not video signal whether it is from any type of DVD player or any type of sat top box.Try to check signal cables.

Posted on Oct 23, 2007

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The green indicator merely lets you know that power is getting to your TV. The absence of picture and sound could be due to power supply failure

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In most cases the standby light might blink with different rapidity to indicate a fault relevant to the processor. It is possible that most of these indicate that there are errors in the processing section . Since there is a possible short or leak in the circuit the output driver section can take in huge current to trip the SMPS or from advice from the micro processor. Remove the power plugs and make sure that high voltage sections are discharged of the potential stored in capacitors. Look for visible signs of leak or of busted capacitors. Look for bulged capacitors or damaged components- burnt or busted. Use a multimeter to check the continuity or shorting in components, if so detach from circuit and test . If the voltage builds up and the set power ON and then shuts up then the suspected section must be checked in detail.

The processor must have the +5 voltage to the function properly , the +B and secondary voltages also must be checked to infer the fault. Trace with caution and in running through the signal path , circuit trail.

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After the tv is turned on a green light flashes more than 8 times and the tv screen never turns on and then a red button turns on but not on the screen.

Power board is dead,open the tv check power board for those capacitors are puff up or bust open.Must know how to solders change these puff up or burst open capacitors.Or buy replaced the whole power supply board at,

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1 Answer

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1 Answer

Power on but busting [no eht]

could be a y-sustain board, av board or power supply board. i would think y-sustain if i had to guess

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