Re: let's bring this back to life Re: Tektronix 453 high voltage problem
Yes, my 453A also has vacuum tube rectifiers, and a non-potted HV transformer. I really went through the whole HV supply until there simply was nothing else to blame except the transformer, before finally giving up to the very unwelcome realization that the HV transformer was bad in the scope I had used since it was new. Very sad indeed.toggle quoted messageShow quoted text
From: TekScopes@groups.io <TekScopes@groups.io> On Behalf Of william_b_noble
Sent: Monday, June 11, 2018 2:55 PM
Subject: Re: [TekScopes] let's bring this back to life Re: Tektronix 453 high voltage problem
The reason I don't think that the transformer epoxy is going bad is because the transformer is not potted at all. I can see the windings. My understanding is that later transformers were potted. I have the early style supply with the vacuum tubes for the 12kV high voltage doubler.