Bill:
Since you have a scope and the SAMS Photofact you are way ahead of the game
........
Check the horizontal driver and other waveforms around that area.... the
Photofact will have a pictorial of the way the waveforms should look as well
as the approximate P-P amplitude..... if there is ringing or out of spec
rise-times, etc..... you may have located the problem.... could be a cap,
coil, ? ? ?
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
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"Bill" wrote in message
news:zLSTb.168220$Rc4.1291914@attbi_s54...
I have a GE 35GT695 35" TV (chassis # CTC187) with a horizontal output
transistor that runs hot, and hotter. The original one, a BUH517, failed,
and I replaced it with another one. Most of the time it runs at ~135 deg
F,
but every 4 - 8 hrs, it spikes up to 200. It has run for about 48 hrs.
The
picture and sound are fine.

I rang the flyback and yoke and used a DMM on the diode setting to check
the
diodes in the horizontal output stage (in-circuit) and they look OK. The
B+
is 140v, and the 190v supply is at 200v. Both measurments were made using
a
DMM.

Any suggestions? I have the SAMS Photofact, a scope and an isolation
xfrmr.

Thanks
Bill