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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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Bad Tuner?
Got this 32" Sony right now, don't have the model # handy but it's a '99
model. Nothing but snow with a few barely visible lines, looks like it's trying to tune something in but not succeeding. A/V input works fine. The customer was not in possesion of it when it quit, so they aren't sure if it was hit by lightning or not. To confirm that the tuner was bad, I first checked all supply voltages to the tuner - all were perfect. I then injected a signal into the IF output of the tuner - this produced a good solid image. That probably confirms a bad tuner, but I want to be absolutely sure before I replace it (a replacement runs about $150). I don't have a lot of experience with tuners because customers seldom ever bother to have them replaced. So have I diagnosed this properly? Or is there anything else I should check? Thanks for any advice. |
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