No, the bias on Q2 is correct if 120v is good.? The 16.8v base
voltage reverse biases the b-e junction of Q2 turning it OFF.? The
7.27v b-e bias on Q1 HV OSC is problematic.? This shoud be no more
than 1vdc or so with the oscillator running.? Power transistor
sockets can get flaky with age, and sometimes simply removing and
re-installing the transistor will cure the problem.
Dave
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Yes, you are correct, it is the HV Osc Q1, I was mixed with
another section that was giving problems but resolved.
I'll pull it out and test it, I have already done that HV
Disable Q1 and Q2. Someone else suggested on another group that
Q2 was dicky, despite it checking ok on my tester, it was
replaced as I have loads of equivalents but that wasn't the
problem.?
So I'll try this test and let you now if is OK or not.
Graham
