OK here’s the result @Syed @Abhishek
I found the problem - -
The white plug on the CHIP board is intermittent. If I gently wiggle the connector plugged into the board, the female receptor on the board moves ever so slightly and cuts the CHIP off. I checked to see if there was a cold solder, and it looked good - - so it must be a bad connection internal to the board.
Voltages look fine - - USB wall wart output is 5.0 vdc, CHIP voltages are:
GND to VCC-5V 5.03 vdc
GND to VCC-3V3 3.23 vdc
GND to Vcc-1V8 .364 vdc
Boston Power battery terminals when operting is 3.62 vdc, so I’m not lossing anything on my 10 ft USB cable.
@Syed how do you want to handle the CHIP repair? Do you want this one back to investigate the problem. This sure sounds suspect with other people’s problems.
For now I can jam a piece of paper between the black pin connector and the white female battery terminal to hold it in place and keeping it from disconnecting. Ken