Re: HP 180A Oscilloscope.
Right, once the unit is properly warmed up we still have a lot of unwelcome EHT/PSU variation.
I have a schematic, I'm willing to give it a go (carefully), but wonder exactly where to start. Measuring voltages maybe? Is there a particular part known to fail? Transformer output voltages perhaps? In your hands here.
Cheers from Bill.
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