Frank wrote:

So, the only things I know for sure at this point is that the low
voltage readings displayed by the CAI-302 are NOT due to low glider
battery voltage, that there is no obvious external wiring issue, and
that rapping the unit smartly is not recommended ;-).

Anyone have additional suggestions/thoughts?

My 302 would sometimes lose the vario tone to the remote speaker while I
was flying. On the ground, tweaking the 10 pin connector gently would
restore it, though it sometimes restored itself before landing.
Cambridge checked it, couldn't find anything wrong, but resoldered
joints near the input connector anyway, and sent me a new connector for
the glider wiring just in case that was the problem. I put in the new
connector. I still don't know what was wrong, but no problems since then.

So, I suggest you replace the connector. It's easy and cheap. If you
still have problems, it probably means sending it in for repair.

--
Eric Greenwell - Washington State, USA
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