M # KV-27TS27, was dead, replaced Q502: 2SC4927
H.O.T., Q601, 602 2SC4664 regulators, R647 ohm fusible
resistor, C613 .047 uf @ 400 volts, 2.5 amp gma fuse, &
D 622 is ok! Worked perfect for about 30 seconds, then
po go the parts! Flyback common to go? Ideas? Rono.

Dry joints on Drive Trany plus other dry joints on Hor drive Txr..

kip
"Rono" wrote in message
...
M # KV-27TS27, was dead, replaced Q502: 2SC4927
H.O.T., Q601, 602 2SC4664 regulators, R647 ohm fusible
resistor, C613 .047 uf @ 400 volts, 2.5 amp gma fuse, &
D 622 is ok! Worked perfect for about 30 seconds, then
po go the parts! Flyback common to go? Ideas? Rono.

You know i did that! Looking for something
I missed!.........Anyone????? Rono.

Rono:
You certainly did NOT mention that you checked for dry joints on the
HDr xstr and xfmr.... it was a good suggestion to your request.
ALSO.... did you check the black and green varistors? .... the small
"chicklet" caps? And when you think that you have caught everything
you should bring it up real slow on a variac while watching the SMPS
transformer waveforms on your oscilloscope..... lots of good repair
suggestions can be found per the Sony factory service literature and
numerous postings on this newsgroup..... do an archives search on
google groups for lots of case histories and specific information....
a good place to learn from other's experiences, and don't forget to
contact SONY and obtain their service suggestions for this.
electricitym
..
..