Batboard

2 won't read write but otherwise so far as i can tell function fine no error codes other than serial bus communication error when trying to read or write. 3rd has no tx audio but reads and writes fine.

simple fix?

forgive all the saber questions as i haven't played with these in years and am back to newbie status as i have forgotten much on these.

i have also attempted a search for answers before asking these questions.

The one with no TX audio: Check the small ribbon between the bottom of the front panel and the main PCB (make sure it's connected, remove it and clean the pins, etc)

I have had one that liked to work loose over time...

turns out it was a secure without a bypass or secure module. took module from radio that wont read/write and it started working.

Batman wrote:2 won't read write but otherwise so far as i can tell function fine no error codes other than serial bus communication error when trying to read or write. 3rd has no tx audio but reads and writes fine.

simple fix?

Dumb question time, did you try cleaning the contacts on the two that won't read/write? Also try an external speaker/mic.