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Television will not come on. The red light power button blinks three times and then nothing.

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  • mjwells58 Apr 08, 2008

    I have a Panasonic PT-56WX33G HDTV 56" Projection. The power button blinks red three times and the TV does not come on.

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  • Master
  • 3,422 Answers

Hi,

The only solution to fix this problem is to call a tech.

Few troubleshooting steps you can try:

1)Do a hard reset by unpluging all the cords for 4hrs and then plug it back.
2)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.

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

Posted on Apr 08, 2008

  • Priya darshan Apr 08, 2008

    .There are some of the fuses which has to be replaced but you may also have problem with convergence IC's.

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  • Master
  • 549 Answers

If your set is a sony, then hereis some info. I can only give general info because I do not know what you have.

  • 0 times, Diagnosis: Power does not turn on. Possible causes include: Power cord is not plugged in, Fuse is burned out (F6001) (G board). Symptoms of the problem: Power does not come on, No power is supplied to the unit, AC power supply is faulty.
  • 2 times, Diagnosis: B overcurrent (OCP). Possible causes: H. OUT (Q8024) is shorted. (D board), +B PWM (Q8035, 8038) is shorted. (D board) Symptoms of the problem: Power does not come on, Load on power line is shorted.
  • 3 times, Diagnosis: +B overvoltage (OVP). Possible causes: IC501 is faulty (G board), IC5002 is faulty (G board). Symptoms of the problem: TV has entered standby mode.
  • 4 times, Diagnosis: Vertical deflection stopped. Possible causes: +- 15V is not supplied. (D board), IC8003 is faulty. (A board) Symptoms of the problem: TV has entered standby state after horizontal raster, Vertical deflection pulse is stopped, Power line is shorted or power supply is stopped.
  • 5 times, Diagnosis: white balance failure (Not balanced) Possible causes: Video out (IC7101, 7201, 7301) is faulty (CR, CG, CB board), CRT drive (IC309) is faulty (A board), G2 is improperly adjusted. Symptoms of the problem: No raster is generated, CRT cathode current detection reference pulse output is small.
  • 6 times, Diagnosis: LOW B OCP/OVP (Overcurrent/over voltage). Possible causes: +5 line is overloaded. (A, B boards), +5 line is shorted. (A, B boards). Symptoms of the problem: No picture.
  • 7 times, Diagnosis: Horizontal deflection stopped. Possible cause: Q8035, 8038 is shorted. (D board)
  • 8 times, Diagnosis: high voltage error. Possible cause: T8005 is faulty. (D board)
  • 9 times, Diagnosis: Audio error. Possible causes: +- 19V line is shorted. (A, B boards), IC708 is faulty. (A board), PS701 or PS702 is opened. (A board). Symptoms of the problem: No sound

Posted on Apr 08, 2008

  • Hjalmer Lamminen
    Hjalmer Lamminen Apr 08, 2008

    The above post is from me.

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  • Master
  • 3,037 Answers

Not knowing your exact model, the following information may be a little off but will work all the same

I think you may have a few problems here. If you are comfortable with soldering, check the following parts first:
R7060 and R7066. These are .27 ohm resistors that feed the convergence ICs. They may be open. If they are open, the convergence ICs are probably bad and need to be replaced. These are STK390-110. These should be readily available on-line for about $20-$25 each.

Let me know if you need any further help and remember that working on a tv can be dangerous and can result in a large electrical shock.

Posted on Apr 08, 2008

  • 1 more comment 
  • Benjamin Patri
    Benjamin Patri Apr 08, 2008

    The above is exactly the information you need, it is for panasonic, the red light is an indicator that there is a problem and blinking three times means that most likely the ICs need to be replaced and if that doesn't help, then it would be the board, but most likely the ICs. Are you experienced with opening a tv at all and know what to look for? I can get you pictures or further information on the matter if you wish. Thank you

    Please keep me updated

  • Benjamin Patri
    Benjamin Patri Apr 08, 2008

    You do not need to call a tech to fix this problem, you just need to know how to handle electrical devices and how to solder new ICs onto the board. Let me know if you have any questions

  • Benjamin Patri
    Benjamin Patri Apr 17, 2008


    Were you able to fix this using my information?

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