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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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re Samsung TVCR 346
This a 34cm TV / VCR combo my wife is very fond of
Two lines 1" thick rolling down the screen (separated scan). , maybe Retrace lines or bands rolling down the screen. We suspect its a electro in the vertical, but what is the best way just looking at the PCB which is the vertical section. I think the switch mode supply is obvious, then theres the tripler and a HOT nearby but what would be around the Vertical drive section ?? |
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#2
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re Samsung TVCR 346
Fred wrote: This a 34cm TV / VCR combo my wife is very fond of Two lines 1" thick rolling down the screen (separated scan). , maybe Retrace lines or bands rolling down the screen. We suspect its a electro in the vertical, but what is the best way just looking at the PCB which is the vertical section. I think the switch mode supply is obvious, then theres the tripler and a HOT nearby but what would be around the Vertical drive section ?? Sounds like you have AC hum from bad capacitor(s) in the power supply. Does it run on battery? Try it. If not, test caps or just replace the electrolytics in the power section. |
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