Hopefully you can help me diagnose what I believe to be a failed ATMEGA32U2 chip on my APM 2.0 based on the following diagnosis.
- PC no longer makes a beep when connected via USB and extra COM port is not found.
- RX and TX leds no longer flash on the board
- Receiver inputs no longer control the servo's (PPM encoder not working ? i.e. 32U2 chip)
- Attempting to update the 32U2 firmware (thought it may have become corrupt) fails. PC still doesn’t see APM 2.0 following reset of 32U2 and hence unable to flash.
The rest of the board seems to be fine as the blue/red/yellow LEDs flash as normal and the servos centre after about 5 seconds following switch on.
Anybody any ideas on what else I can check or do you agree that the 32U2 chip is dead ?