01-07-2022, 01:49 PM
Congratulations on finding the problem.
Try re-soldering the 6H6 heater pin tips, as this is a common problem with intermittents. Sometimes there is a marginal solder connection between the lead and pin tip which only shows up many years later.
Try re-soldering the 6H6 heater pin tips, as this is a common problem with intermittents. Sometimes there is a marginal solder connection between the lead and pin tip which only shows up many years later.