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Sony 36 tv sound 20 sec thenquits has no picture hv seems to do the sameopened set

Opened set sound +hv 25 kv come on for 20 sec.then both quit.im aold retired x tv service guy last tv rep was 30 yrs ago.new tech stuff throws me. maybe u guys have some tips for me. im 75 yrs still trying , thanks for listening. gacaddy@aol.com

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  • gacaddy Jan 03, 2009

    Thanks Dan. The set is a Sony KB36 HS 20 . It flashes code 4---4---4---continuously. It comes on with sound, no picture, but, has 24 KV HV. I notice a slight brightness flash in the lower right corner of screen but no picture or brightness anywhere else. After approx. 30 seconds, a relay clicks and sound and HV quit. If I press on the same thing will happen exactly. The relay sound and HV quit. This will continuously happen its a loop. Set was playing excellent. I am wondering if I should just junk the set, or is it worth working on it. Do you have an answer to the issue?? The set weighs 240lbs. Its a monster but its only 4 years old. Please let me know any ideas you may have that could help me save the set, or let me know if I should get a mover to haul it to the trash heap.



    Your help is always greatly appreciated.

    This Old TV Repairman wishes it was like the old days with tubes and wires vs. bells and whistles.



    Jerry/ GACADDY

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This set should have the standby light blink a code number,pause number. Can you please post that count and the model number? With that I should be able to assist.

Thanks,
Dan

Posted on Jul 23, 2008

  • ABRsvcs Jan 05, 2009

    Try replacing C6532 which is a .056ufd 800V cap located off of pin 3 of the flyback. This cap often goes open and can cause this.



    Let me know the results.



    Thanks,

    Dan

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