Quote:
Originally Posted by Alex KL-1
Hmmm... multiscan monitor... a lot of things to see...
22V? The IC are responding ok to the logic on it's inputs (the IC250)? Or, if something ahead the P302 are throwing this voltage (eg. with RV257 closed)?
Likely, some cascade of events can occur.
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I'm not sure how to check if there's an issue with IC250. I checked for shorts, and there's no shorts between any of the pins; all pins are no connection to each other.
From the datasheet, there doesn't seem to be a way that 20+ volts is produced by Pin 10 unless there is some internal short?
This is why I though the 20+ volts is coming from somewhere else further down.
Transistor arrays are new to me. This one looks this way on the inside:
