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Old 02-12-2010, 06:51 PM
peter g peter g is offline
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Join Date: Feb 2010
Posts: 8
sick sony

hi all, greetings from s. florida. my tale of woe concerns a sony rptv, vintage 1996. model#KPR-4110, chassis #SCC-643A-A. the problem is i cannot converge the red vert lines(sides). this is what i"ve done, so far. 1)changed fluid (all three tubes). 2)checked all caps on convergence bd. for value and esr. checked all caps on main chassis. 3) checked B+ voltages going to convergrnce bd., also 12v reg. 4)checked resistors (convergence bd.).5)changed both output stk's. and several out of tolerance resistors.6)checked both input waveforms int convergence bd.(from E bd.)7)swapped output chips and op amps.(to see if trouble moved). 8)checked pc boards for breaks.in spite of all this checking, i still can't converge the red! i can't believe i could not find one bad electrolytic in this set! this forum is my last resort before trashing this poor sony. thanks. sorry for the long thread. pg
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