02-01-2020, 02:41 PM
(01-31-2020, 11:27 PM)tophneal Wrote: Sorry I missed that in the OP.
So I'm in good company
After re-reading more carefully, it still sounds like a power supply problem.
If you have a meter, see if you can measure 5V at the inputs. Then check the outputs of the regulators.
If you find 0V where there should be 5V or 3.3V, then try disconnecting all sources of power, and see if you can find a discontinuity or short to ground.