Re: let's bring this back to life Re: Tektronix 453 high voltage problem


The HV circuit takes less than 500mA when healthy: current is inversely proportional to the DC voltage in (unregulated, but normally around 16 to 17V raw DC).
I wouldn't recommend removing the diode D940 and then powering the rest, in case you end up with +ve grid volts.
Have you eliminated C953/C961 by just lifting C954 and powering?
I'll send you some useful component location info.

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