M Terry Posted June 5, 2023 Report Posted June 5, 2023 Strange happenings with the electrical bits of my 69 M20F Some times when I do my preflight, the stall warning fails, but if I go back and cycle the master switch, it works again. The pilot side PTT failed while on a flight, I had to switch my headset to the copilot side and reach over to activate the mic. When back at the hanger I tried tracing the wire to find the fault, but never did. I didn't fix anything but the next time I went to use the plane it had fixed itself. The transponder shows antenna fault, but if I push on the face or turn it off then on it starts working again. The electric trim failed (clicks but does not roll). This week the GNS530 failed (powers up but does not acquire satellites or send or receive via the radio. Does anyone have an Idea of a single point of failure that could tie all these glitches together? thanks
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