CTC 203 RCA T.V.!
Dead, "picked at"....of course! PWM power supply working fine,
Standby secondaries are ok, on startup...it tries three times, & high voltage does come up momentarily! Then shuts right down! Sometimes, it takes a couple of tries to switch it on! 5 volts to EEprom, & has the one ribbon Gemstar module, & I've unplugged that, but the same thing! Horizontal output, flyback, CRT, yoke, & vertical IC have been eliminated! B + to flyback & horiz output should be 143 v, & is 250 volts! Ideas? Rono. |
Rono !! Go here and this may be of some help.
Sounds like trouble with the reg circuit. http://wa6ati.com/CTC203.html kip "Rono" wrote in message ... Dead, "picked at"....of course! PWM power supply working fine, Standby secondaries are ok, on startup...it tries three times, & high voltage does come up momentarily! Then shuts right down! Sometimes, it takes a couple of tries to switch it on! 5 volts to EEprom, & has the one ribbon Gemstar module, & I've unplugged that, but the same thing! Horizontal output, flyback, CRT, yoke, & vertical IC have been eliminated! B + to flyback & horiz output should be 143 v, & is 250 volts! Ideas? Rono. |
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