Question about Panasonic PT-47WX53 47" Rear Projection HDTV

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Panasonic pt-47wx53 problem

Was playing a game and during this time tv made high pitched crackling sound then screen flicked black, then it worked again then crackled again then turned off completely then I smelled a slight burning smell.

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What does the light on the front of the TV set do. This is a self diagnostic tool. How many times does it blink?

Posted on Aug 16, 2007

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Crackling when turned on then high pitched howl and sound like vinyl being played loud and having stylus dragged across it is the only way to describe the noise after howl. was being used and did crackle...


You didn't say whether it was one or both channels. The word to describe the noise when using a turntable, back in the days, is called Acoustic Vibration. Your issue is not that. I can be an amplifier oscillating, for the high pitched sound and the crackling could be DC Offset*meaning a damaged amplifier) If you need further assistance, or would like to inquire about a repair, please visit my website at audioserviceclinic.com. Thank you.

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The speakers that are inside your tv are damaged and needs to be replaced, after you replace your speakers, the Sound will return at the correct factory settings from which you received your tv..

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It sounds like the speaker wire it not grounded good. It sounds like a high pitch whistle or crackle.

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First of all, sorry for the mix up on model the model #. I was viewing a problem regarding LG LCD TVs and found your link. My problem is with an LG 42LGX LCD HDTV. It has worked fine without any issues...


Hi,

welcome to fixya and thank you choosing my service..

OK,that is the most and common problem of all LCD TV...

Usually dim and totally have no back-light is cause of bad inverter board.One of the inverter board is shorted that cause dim light and crackling sounds..

This are the sample images of inverter board.
1_22_2012_1_29_43_am.jpg

to make sure that the problem is on the inverter board kindly try to disconnect/unplug it from your TV and power ON then observe if the crackling sounds remain or not..If the crackling sounds gone replaced the inverter board..Also I need to how many inverter board you have? if 2 or more disconnect it one by one to determine if where is the specific faulty inverter board..

Example:
I disconnect #1 inverter still have crackling sounds..next disconnect #2 inverter and reconnect the #1 inverter until you found the faulty one..Note when you doing this make it sure you power off the TV before you unplug or disconnect inverter board because its high voltage..

I need the picture your TV screen..just send it to [email protected]

Regards.
Chester

Jan 20, 2012 | LG 42LC2D 42 in. LCD HDTV

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It sounds to me like an impedance mis-matching problem!!!
But it does seem you have done everything correctly so I cant offer any other suggestions - sorry!!!!

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Sounds like you have a bad flyback Transformer...Crackling is high voltage leaking. I would quit turning it on and replace the main board in the set if you are good at soldering you can replace the flyback transformer but cost wise it is easier to replace main board. 20" might not even be worth the repair.

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Did you find a solution because I have the same problem on my JVC?

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