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Originally Posted by zeno
Thermistor is for degauss.
Most solid state sets bleed off HV fast so no clue there.
Find on/off relay, USUALLY black, rectangle, 4 pins, near the DGS
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It seems to not be there, might it be on one of the other boards. I do hear a relay click when the Set is powered up (the other sign of life besides the channel selector lighting up on whatever channel I choose).
Quote:
Quick tests: Check DC at STR. The big resistor above it should
have 150v one side apx 130 on other.
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I'm getting nowhere near the right number on these (0.1VDC)
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Check hoz drive xformr primary abt 75V sec abt 0V.
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How do I know which is which?
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Check hoz out, case ( collector) abt 130V
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0.54VDC
It seems the high voltage Circuit for the CRT is not getting enough voltage for some reason from early on in the chain. The fuses are all good, and the one confirmed Relay is switching (it's on the Sound PCB, which is also what the power cord goes into before anything is sent to a transformer).