Gordon,
I have the time and have done some forensics on other devices.? I am NOT a Raspberry Pi expert.? I DO have the SMD tools that I need.
With the above understanding, I would like to look into the cause of your RPi failure.? If there is someone who does have experience with RPi diagnostics, I would rather you send it to them.
Let's wait a few days to see if someone else approaches the challenge.? If not, then my QRZ email and address are good.
73
Evan
AC9TU