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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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#1
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Thompson GE 46GW947 RP TV, no power, squeaks
According to the original owner, the tv turned off while she was
watching it. Then when she plugged it in, it would make a 'click'. When I got it from her, I plugged it in and I found the noise wasn't a click, but a sort of chirp or squeek. It happens in about 1-2 second intervals and continues for a short time after the TV is unplugged. I'm not sure what it is, because I know of a number of components that can make this noise or cause another component to make it. I know the noise isn't coming from the speakers, which I did get to initialize, and there are no visible arcs inside the machine. I read somewhere else that it could be the High Voltage splitter. Any input would be grateful. Thanks. |
#2
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Thompson GE 46GW947 RP TV, no power, squeaks
That noise is from the SMPS starting and shutting down, usually from
over current. *ANY* short on the secondary side of the SMPS will cause this. Typical failures are secondary power supply diodes and caps, bad HOTs, bad Flys, shorted HV splitters, shorted vert amps, shorted audio amps. There are other causes, but these are the most common. Get a manual and localize the load. John |
#3
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Thompson GE 46GW947 RP TV, no power, squeaks
Do you know where I might find a manual, I've looked all over the
internet and can't even find pay manuals. |
#4
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Thompson GE 46GW947 RP TV, no power, squeaks
Go here...
http://www.thomsonnetwork.com/unprot...CC3280,00.html kip "Andross" wrote in message ... Do you know where I might find a manual, I've looked all over the internet and can't even find pay manuals. |
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