Question about Sony FD Trinitron WEGA KV-21CL10 21" TV
I have a Sony TV model number KV-2167MT Trinitron. I'm facing problem while switch on from front switch Standby LED blinking while press any switch Like Volume up down, program up down. but power not on. I found 2sd1878,PS801 and F502 crystal (near CXA1213 IC) faulty. After replace all component it work 30 minutes after that transister get short again I change tr. twice but problem is same. Tr. 2sd1878 short after 30 minutes. I check output voltage 110V DC is normal. Please suggest. I have a Sony TV model number KV-2167MT Trinitron. I'm facing problem while switch on from front switch Standby LED blinking once while press any switch Like Volume up down, program updown. but power not on. Low level humming is hearing from power supply.
I have not worked on your particular model. But, I have serviced many TV sets over the years. My answer will ge generic.
Check all the capacitors in the horizontal output stage and power supply areas for high ESR. All the caps that are out of spec must be changed.
The high voltage multiplier & flyback can also cause the fault you are having.
You have to consider that the DC voltages are not the only important spec that has to be met. There are also many power drive signals that work with reactive devices. If there is any defect in the critical areas there will be failures.
Posted on Nov 26, 2008
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Posted on Jan 02, 2017
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