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01-23-2019, 04:40 PM
thank you for the response, it has helped me a lot. The Bandmaster is a 71 I believe, the filter caps look like they might be original. When i did a power up with only the rectifier tube in place I got some smoke, came from the filter cap tray. The cap at the PI node was leaking oil. The resistors sitting on top of this cap didn't look happy. Yes, I can change just this cap and the resistors, I can always change the other caps when/if they fail. I will learn a lot more by doing one thing at a time and observing the results. And that is the point, to learn.
According to the schematics, the standby on voltage from the rectifier is 440v, but the standby off voltage is 510v. This is what hits the first filter point, the series connected 70uF 350v caps.
According to the schematics, the standby on voltage from the rectifier is 440v, but the standby off voltage is 510v. This is what hits the first filter point, the series connected 70uF 350v caps.
