Re: Repairing my Tektronix 454 oscilloscope need some advice
Victor,toggle quoted messageShow quoted text
I would first of all test the waveforms at terminals 7, 9 and 10 and check that the amplitudes have more or less the same ratios to each other (and perhaps to the 1 V pp) as in my case. Your 52 V is really to low, so check it against the (negative) peak voltage at terminal 9. The secondary waveforms may show a slightly flat negative peak because of diode conduction, but only slightly. At terminal 9 the negative "flat" peak was about 5 V smaller than the "round" positive peak.
Can you measure the primary current? Perhaps your generator can show the current drawn?
For test HV diodes see the message by Chuck Harris or see message #163125).
On Thu, Feb 20, 2020 at 09:42 PM, Victor wrote: