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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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Sanyo DS25390 TV Buzzing
While watching a program, the Sanyo DS25390 started buzzing. At first
I thought it was a some sorta of feature that was an alarm clock going off since there was no difference in the picture or audio. The channels change fine and everything seems operational. except for the buzzing. I took the cover off and found a relay buzzing at about 60hz, it may be lower but I don't think so. I did some searches for the chassis on the internet and didn't come up with a schematic. Looking at the circuit it seems that it MAY BE the power on relay. I took a picture incase someone would like to see it. http://www.TinyURL.com/yelu65c Hopefully that link works out. I am not quite sure how to post pictures into google groups. a1 and a2 are the power cord, and you can see the fuse. So this seems to be the power on circuit. I didn't see any deformed caps in the area. (or on the board for that matter). I will keep searching for some sorta drawing or schematic for this board. Any Idea's would be helpful, maybe one of you have run into this before and can give me a leg up on the problem. Much appreciation. Gus. |
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