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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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Sears 25" T.V. (JVC) !!
Sears (made by JVC) 25" 57-14367 chassis A-53.
No startup, or high voltage, relay clicks, led flashes. LA7832 vertical IC replaced, with capacitors (very common), still the same. IC had bad resistance. Looks like no horizontal drive. Main IC (jungle) failure? Usually the vertical repair, is all that's needed here. Any common problems? Rono. |
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#2
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On Thu, 26 May 2005 08:21:57 -0230, "Rono" wrote:
Sears (made by JVC) 25" 57-14367 chassis A-53. No startup, or high voltage, relay clicks, led flashes. LA7832 vertical IC replaced, with capacitors (very common), still the same. IC had bad resistance. Looks like no horizontal drive. Main IC (jungle) failure? Usually the vertical repair, is all that's needed here. Any common problems? Rono. Make sure you have resistor replaced and diode off one pin of flyback transformer for the vertical's power. Cheers, Wizard |
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