Question about Panasonic PT-53TW53 53" Rear Projection HDTV-Ready Television

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Screen projection problems

I have a Panasonic TX-56P800H 142cm rear projection tv. I bought it new 3 years ago and in winter it has always had a problem displaying an image first thing in the moring when its cold i guess?? but I could fix it with a slap on the top of the screen. Now three years on I'm abusing the poor televsion and it struggles to flash on for me.
Does anyone think that it needs a new bulb? Please help?

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I think its not necessary to replace the bulb, based on what you have said that the T.V will work when you slap it on the top of the screen. the problem i guess is there is cold solder or loss connection on the CRT board or somewhere in the video or chroma section...

Posted on Aug 11, 2008

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Hi, I have a Panasonic TX-56P800H rear projection

Hi John,

I've checked my collection of Panasonic Service manual to verify the location of the parts you've mentioned but I don't have a copy of this model yet. Only have the service manual and schematic diagram.
Most of the arching are came from the high voltage's leakage from flyback transformer and/or in the ballast board high voltage transformer. If it is originated near to the said transformers, high chance that the arching is not came from the resistor itself but on the transformer. If this is the case, the only solution is to replace the flyback or the entire ballast board. Please make some necessary safety precaution handling this kind of symptoms because it is a high voltage leakage that can cause injuries with simple mistake only. You can pinpoint where the exact origin of the leakage/arching by powering on the unit in the dark room, you can easily see where the arc came from in the dark.
Please let me know if you need further assistance.
Have a nice day!
Best Regards,

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