gtrshop Posted August 19, 2018 Share Posted August 19, 2018 Has anyone figured out the logic of the micro-switches that activate the various functions on a POD XTL? Mine has some switches that are intermittent, and few have stopped working all together. I'm tracing out the lines of the Bank down / A / B / C / D PCB and I have continuity from each micro-switch back to the pin header, but when I activate a known working micro-switch, I don't see a change of state from OPEN to SHORT (When I press the micro switch actuator, I would expect to see it go from either OPEN to SHORT or the other way around) Many years as a board level repair tech, am familiar with test equipment and such. Kind of stumped by this seemingly simple board. Quote Link to comment Share on other sites More sharing options...
gtrshop Posted August 19, 2018 Author Share Posted August 19, 2018 It would appear (answering my own question here....) that more than just a couple of the micro-switches are worn out. After making up a test lead and shorting the top pin of a micro-switch to the bottom pin of the same switch, the function changed immediately. The good news there is that: - the ribbon cable is good - the PCB traces are intact - the solder re-flow work was successful. - the main processor and all tracked back to the ribbon cable breakout are intact. So now to determine the microswitch part, order and replace. It will live to gig again ....LOL Quote Link to comment Share on other sites More sharing options...
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