After some inspection I think the filter caps are bad. This thing has been in storage for who knows how long. I just ran it for more than fifteen minutes and it did not fade. So at some point I will test the caps and probably replace them all. My other scope, a Tek has a serious problem that I am unable to track to its source. It helps to have a working scope to trouble shoot another.
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On 12/3/2018 6:13 PM, Artekmedia wrote:
Trace fade after it gets really warm? sounds like the HV transformer problem which plagues many of the same vintage Tektronix scopes..FWIW... I would at least start looking in HV circuits anyway
Dave
manuals@...
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Richard Knoppow
dickburk@...
WB6KBL
