Sorry that I haven¡¯t been following this thread closely, so forgive me if you¡¯ve already explicitly verified that the vertical calibration has not been affected. But if the vertical gain is off by the same amount as the horizontal, though, that would point to a HV problem (in this case, a reduction).
Cheers
Tom
Sent from my iThing, so please forgive typos and brevity.
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On Jul 24, 2021, at 9:57 AM, Grayson Evans <wa4gvm@...> wrote:
?I suspect horizontal gain drift since that fits the symptoms and I don't know of any other problem.
I replace all the electrolytics in the power supply and everywhere else I could find one.
Just not sure if the horiz. gain is adjusted using a pot, (R860) or in the confusing CAL 01 procedure.
Anyone done that procedure?
