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2016-05-31 at 12:07 PM #1530
The power switch on the Mayfly is a DPDT switch that has 2 functions. One pole switches the power input line to the main processor power rail, and the other other pole switches the power supplied to the FT232RL USB chip. So if there’s a defect in the switch mechanism on only one of the poles, it’s possible that the Mayfly will still power up and perform normally but the power for the USB converter could be intermittent. If you’re continuing to have problems with the switch, I’ll send you an email about how to resolve this.