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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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sony kv-27s35 tv is dead, makes sound when it is plugged into the outlet w/o power turned on
Sony kv-27s35 tv makes buzzing sound when plugged into the outlet.
This is not the normal sony degaussing sound. It sounds like gas is leaking from a pipe. Initially the set was completely dead (was not making any sound). I found Q601 and Q602 shorted and R607 (.1 ohm) open. I changed following components: C609, C610, Q601, Q602, R607, R608, R609, R610, R611, R613, R614, R616, R617, VDR601, D603, D604, D605, D606, D607, D608, D609, D610. These components are from Telematics 2000 Kit 46-0358 (Sony TV kit) bought from tritronicsinc.com IC645 was also changed. Now it makes the sound after these componets were changed. What could be causing this sound. I am little afraid to poke around the circuit with a multimeter. Could the tv blow if the keep the plug plugged in? How do you diagnose a faulty flyback transformer? thanks for all your help in advance. |
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