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My t.v. just shut off and won't come back on,

I just go this t.v. from a friend and I turned it on and it was fine. I have a window a.c unit, when i turned it on, the t.v. shut off and I could smell and odd smell

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  • 5 more comments 
  • BonnieMC Apr 03, 2008

    I opened the back of the t.v. up and found a black film on the wires, like something was burning

  • BonnieMC Apr 03, 2008

    I don't know anything about the circuit board, how will I know what I am looking for on the board.

  • BonnieMC Apr 03, 2008

    Checked the fuse, thats not the problem

  • BonnieMC Apr 03, 2008

    Checked the fuse, thats not the problem

  • BonnieMC Apr 03, 2008

    what are these new parts called and where would i find them

  • BonnieMC Apr 03, 2008

    Where can I get a service manual for my t.v. model number 7P5430W101

  • BonnieMC Apr 03, 2008

    hitting it, and jiggling the cords don't work, and have tried the hard reset, no success

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  • Master
  • 13,433 Answers

While its nice to know how to fix it yourself its still dangerious.
Theres high voltage going in there.

I would really recommend takeing the tv to a local professional
you can also find a repair service from www.fixya.com right under the top experts just put your zip code there if your in the us.

Basicly as the guys sayd most likely the powerconverter board or something else has burned.

Not an easy task to perform yourself in most cases and on top of that its dangerious.

so if you need more assisstance let me know.
Im trying to reach the Guru rank, so if you could give me a fixya that would be great thanks.

Posted on Apr 03, 2008

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  • Master
  • 3,422 Answers

Hi,

You can bu the parts from HERE or from HERE
If you need any schematics you can get it from HERE


FEW TROUBLESHOOTING STEPS YOU CAN TRY:

ONE: Check the line cord. Wiggle both ends near the molded part.
TWO: Make sure you have power in the outlet by plugging a lamp into the same exact outlet.
THREE: Do a hard reset; merely unplug the line cord but leave it unplugged for 4 hours before powering up again.

The whacking test is to just bang or smack the set with your hand on the back, side, top, etc., to see if there are loose connections or cold solder joints inside that are acting up. If so, the banging should knock them back to normal and the set should restore. You might have to use some creative banging and some have had to put a book or magazine under one corner to torque the chassis enough to get it to work reliably.

If this does not solve your problem then the only solution to fix your the problem is to get it repaired by a technician

Goodluck,
Please don't forget to rate the solution.

Posted on Apr 03, 2008

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  • Master
  • 1,894 Answers

I think this is due to the capacitors that are going bad in your sircuit board.
it may be even resistors.

because your protection circuit is not working.

Posted on Apr 03, 2008

  • dewan nafees ahmed Apr 03, 2008

    protection circuit is the one that is responsible for protecting the CKT against all kinds of high and low voltages.

    first of all your TVs power section is faulty.
    and so when ever there is a power imbalance it is not able to make itself. stable.

    now what you got to do is.

    replace the power section with all new better components.

    then use a stabilizer to switch on your TV.
    don't use the power directly.

    this wil help you a lot.

    thank you


  • dewan nafees ahmed Apr 03, 2008

    the capacitor in the power board. or the power board if the whole power board is burt out,

    because if the capacitors wont work--ur filter ckt also wont work. --if filter is not working then you are prone to high and low voltages.

    you can find them at repairclinic or at applinace andother site from net.

    WARNING: if you are really handy in electronics then only u can try replacing by yourself at your own risk.

    thank you

    good luck

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  • Master
  • 1,226 Answers

Hello

Please examine the circuit board, and replace the busted spare parts. spare parts is cheap but also you can let the service tech to do the job for your safety.

melnavz

Posted on Apr 03, 2008

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  • Master
  • 19,396 Answers

The power supply is gone, you need to replace it.

Posted on Apr 02, 2008

  • Ginko
    Ginko Apr 03, 2008

    That is a short, if you are lucky you just replace the wires and that is all. Leave the tv unplugged for a while before servicing it, there is always risk of electrostatic charges.

  • Ginko
    Ginko Apr 15, 2008

    7P5430W101 it is a philips remote control serial, not a tv. I suggest not to service your tv if you do not have sufficient experience. If you found a black film on wires, then it is a short it caused plastic to melt, as said. Nothing to do with pcb board, unless it has been damaged as a consequence of short, or the burnt lid was on this board. Cables and components will need to be tested for continuity with multimeter before being replaced.
    If you already identify the area in which the short happened, and it is a short between cables the only use you have for service manual is for haow to open your tv. In any case, if you post the tv number we can check for an online service manual or schematics/diagrams.

    Regards
    I know it can be an easy fix, but my suggestion is to call a repairman.

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