Question about Philips 55PP9401 55" Rear Projection Television

2 Answers

No picture No sound

I have a phillips 55pp9401 That was given to me It has no picture or sound The light comes on in the front the projection board lights up My friend had a tech look at it he forgot he said was wrong with he thinks they said it was the high voltage converter he said it would cost about $500 to fix it

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  • gllanier3 Jan 02, 2009

    yes i do

  • gllanier3 Jan 03, 2009

    The TV has hitachi boards I found a high voltage converter bw00634 They have 2 Hitachi 75.00 and phillips 147.00 is there any differance in these two? Can I use the Hitachi The fly back is on a hitachi defection board jk07112

  • gllanier3 Jan 05, 2009

    thank you

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2 Answers

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Welcome to Fixya! Yes That would be the Problem. Clear and Simple. Not much else that you can do with it till then.

Posted on Jan 02, 2009

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Do you have service manual of this TV? Looking into schematics, measuring voltage and testing few parts will guide you to locate fault .

Posted on Jan 02, 2009

  • Shahid Electronics
    Shahid Electronics Jan 02, 2009

    ok, 
    You need to check Power Supply output voltage, specailly +B volts and then horizontal deflection section.
    Horizontal defelction section is most inmportant area in a TV. check +B volts should be supplied on H-Out Transistor and H-Drive transistor. If volts there, then H-Oscillation circuit is involved here. 
    There is possibility of protection activation in TV as H-deflection or Vertical deflection failure cause this activation. Over Current consumption (FBT one of part) over volts etc are reasons of protection ON.

  • Shahid Electronics
    Shahid Electronics Jan 03, 2009

    You should use Philips recommended fly-back though its made by Hitachi.
    TV Manufacturer  like Philips, Hitachi, Sony etc order parts to vendors as per their requirements and vendor can be any other company but its not necessary that subject part made of Company-A for Company-B product can be used in Company-A product too.


    I'm not sure that my point conveyed properly.

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