Question about Philips 55PP9352 55" Projection Television

1 Answer

No Picture No Sound other than chirping

Power is on, there is no picture, no sound comes from the unit only a chirping noise. The sound from the channel does come through the home theater system.

How do I fix it?

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  • zaabubu Aug 26, 2008

    Thanks VOTIT, I am new to FIXYA.com and was trying to get a sense, with parts scarce, if it is worth it to fix, or should I buy a new TV.

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  • 2,071 Answers

From description you provided that the red light is on or a stand by light and a chirping sound,chirping come from horizontal section maybe H-OUT transistor is busted. Look also the power supply section is in the P-BOARD which has the reading of test point =170v, P-board is a power supply board ,bad regulation of the incoming voltage could cause the issue and maybe there is a capacitor across the incoming line which dry up or leaky already and cause the problems ,change it out with one identical rating.
Also Cold solder issues - each component is soldered into small holes on the printed circuit board which in turn connects said component to the other components. Due to time, heat, use, some solder joints would be cracked or loose. It is possible that the cold solder is still minimally connected (hanging by a thread). When the TV turns on heat would be generated which would be sufficient to further loosen up the solder joint to the point it no longer provides electrical contact. Jarring the unit creates movement inside enough to re establish the contact, sometime good enough sometimes not enough.

Again, since the unit still operates (sometimes) then it is highly probable that there are no defective components. As you have surmised, it is possibly a loose connection, solder joints are "connections" except that molten soldering lead is used to attach/connect the component to the board, "loose connection" in this sense is equal to "cold solder".

Again on the assumption of no defective parts, then seeking a more experienced buddy for the soldering might be to your advantage. This is of course in addition to the possible electrical hazards when repairing....If i have helped,please click fixya.It is the only way i get paid for my work...

Good luck:

Posted on Aug 26, 2008

  • LORETO LACARON
    LORETO LACARON Aug 28, 2008

    Yes it is worth to fix,because only just little problem,if you go a TV shop,maybe they cost you $ 50 to $75...



    Hope this may help





    DON'T FORGET TO RATE;

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