[TechAssist] Sony KV10FMR20 No HV

  • From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Sat, 27 Sep 2003 21:16:20 +0000

Sony
KV10FMR20

              No HV (and ofcourse no picture), audio Hiss/ static-white 
noise (may not be tunned) in tv mode. Radio audio OK.   F602 Blown, R839 
blown, Q802 HOT 2sd1876 shorted.   Have tried replacing mentioned parts 
(guessing on R839, tried several values 100, 10, .2) stays shutdown, no HV 
or start attempt, collector of HOT has B+ ~140v. Pulled and inspected FBt no 
apparent cracks, splits, arcs Rings 73x on my old sencore. R835 tests ok in 
circuit.
      needed:
           1. Proper value for R839
           2. any known failure modes
           3. Possiblity of upload of schematic

Peter Oliver
Tucson Radio TV

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  • » [TechAssist] Sony KV10FMR20 No HV