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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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31" RCA tv model:F31633SB,chasis:CTC187CN2
31" RCA tv model:F31633SB,chasis:CTC187CN2,year:Oct96 while the
customer was watching tv for several hours the tv suddenly made a loud pop/crackling noise then it shut off followed by a loud squeal.I found the following parts defective: T4401=2G@5028-B1B=RCA # 223952=$95 CDN Q4401=BUH517=$10=RCA # 223942 T4301I=horizontal driver transformer's pins required resoldering CR4106P=PFR851/6,FR302/5=RCA # 164589 or 164590=$10 was leaky but not shorted U4101V=STK730-150=$13=RCA # 223948 was fine but I replaced it anyway RT4201=degauss thermistor needed resoldering Tuner & micro grounds needed resoldering After buying all of those expensive parts including the flyback ($95+tx)I am very ****ed off as the tv ran fine for about 5 minutes then the current draw on my Sencore isolation transformer began to increase until about 1.2 amps then F4001=5 amp fuse popped,why did it go?I did not get a chance to put it on the bench yet.Thanks in advance for help on those RCA trouble makers/profit drainers |
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31" RCA tv model:F31633SB,chasis:CTC187CN2
Just a thought Sidney put the old STK back in and then try again
I had one last week in a Panasonic that blew the fuse , I put back in the old STK then it was OK maybe some poor clone STK,s. Check any filter caps in Reg circuit as well. kip -- "Watch the return E-Mail addy its false" "Sidney" wrote in message om... 31" RCA tv model:F31633SB,chasis:CTC187CN2,year:Oct96 while the customer was watching tv for several hours the tv suddenly made a loud pop/crackling noise then it shut off followed by a loud squeal.I found the following parts defective: T4401=2G@5028-B1B=RCA # 223952=$95 CDN Q4401=BUH517=$10=RCA # 223942 T4301I=horizontal driver transformer's pins required resoldering CR4106P=PFR851/6,FR302/5=RCA # 164589 or 164590=$10 was leaky but not shorted U4101V=STK730-150=$13=RCA # 223948 was fine but I replaced it anyway RT4201=degauss thermistor needed resoldering Tuner & micro grounds needed resoldering After buying all of those expensive parts including the flyback ($95+tx)I am very ****ed off as the tv ran fine for about 5 minutes then the current draw on my Sencore isolation transformer began to increase until about 1.2 amps then F4001=5 amp fuse popped,why did it go?I did not get a chance to put it on the bench yet.Thanks in advance for help on those RCA trouble makers/profit drainers |
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31" RCA tv model:F31633SB,chasis:CTC187CN2
Subject: 31" RCA tv model:F31633SB,chasis:CTC187CN2
From: (Sidney) Date: 7/15/03 12:37 PM Eastern Daylight Time Message-id: U4101V=STK730-150=$13=RCA # 223948 was fine but I replaced it anyway RT4201=degauss thermistor needed resoldering I did not get a chance to put it on the bench yet.Thanks in advance for help on those RCA trouble makers/profit drainers Put the original STK back, I'm sure it's fine. Replace the two electrolytics in the circuit before turning it back on. Either the STK was an "SK" (chinese ripoff junk copy), or the TV was off long enough for the two electrolytics to ESR themselves silly to take out the STK. BTW, are you sure the fly was bad? Uncommon failure for the 187. John Del Wolcott, CT "Nothing is so opportune for tyrants as a people tired of its liberty." Alan Keyes (remove S for email reply) |
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