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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Panasonic
is the white line centred top to bottom or left to right?
cheers chuck Michael wrote: I have a 35" Panasonic TV model CT-27G22V. After about ten to fifteen minutes of viewing the TV loses its video but retains its audio. Occasionally, and at random times, the video returns. What's left on the black screen is a thin, bright line right in the middle of the screen. Does anyone have an idea as to what diagnosis I ought to expect when I obtain service? Thanks! Michael |
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Panasonic
Michael:
Immediately STOP using the television until you get it fixed..... you can easily burn the phosphor in the CRT and leave a permanent mark in the picture. This is usually not an expensive repair at most shops.... probably cracked, cold, faulty solder connections, bad or high esr electrolytics, and maybe faulty semiconductors and/or chips. At the very least you should TAKE it to a repair shop for a repair cost estimate so you can make an intelligent repair decision with facts instead of internet or telephone wild guesses. -- Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "Michael" wrote in message om... I have a 35" Panasonic TV model CT-27G22V. After about ten to fifteen minutes of viewing the TV loses its video but retains its audio. Occasionally, and at random times, the video returns. What's left on the black screen is a thin, bright line right in the middle of the screen. Does anyone have an idea as to what diagnosis I ought to expect when I obtain service? Thanks! Michael |
#3
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Panasonic - 27" TV not 35"!
Michael:
More than likely this is a fairly simple repair.... probably dry, cracked, cold or otherwise faulty solder connections near and around the deflection yoke connector to the main pcb or possible other not too serious problems.... My advice in my previous post is still the same.... stop using the television so you don't burn the tube....TAKE it to a repair shop. -- Best Regards, Daniel Sofie Electronics Supply & Repair - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - "Michael" wrote in message om... Centered top to bottom. chuck wrote in message ... is the white line centred top to bottom or left to right? cheers chuck Michael wrote: I have a 27" Panasonic TV model CT-27G22V. After about ten to fifteen minutes of viewing the TV loses its video but retains its audio. Occasionally, and at random times, the video returns. What's left on the black screen is a thin, bright line right in the middle of the screen. Does anyone have an idea as to what diagnosis I ought to expect when I obtain service? Thanks! Michael |
#4
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Panasonic
Michael this is a common problem in most of the newer sets. You have a cold
or cracked solder joint around the vertical output ic. I don't have the manual on hand at the moment but it probably uses an LA7838 IC for the vertical. You need to examine the pins on the ic (ic451?) on the main board for cracks and resolder . "Michael" wrote in message om... I have a 35" Panasonic TV model CT-27G22V. After about ten to fifteen minutes of viewing the TV loses its video but retains its audio. Occasionally, and at random times, the video returns. What's left on the black screen is a thin, bright line right in the middle of the screen. Does anyone have an idea as to what diagnosis I ought to expect when I obtain service? Thanks! Michael |
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