Sorry, I couldn't figure out where to post this. I am trying to debug a dead project based on the Mega 2560. It's the Megacommand for Elektron Machinedrum.
I sold and shipped it to a guy in Italy. It was working fine when I sent it, but was DOA. So now I am trying to figure how to bring it back to life. There is a green LED on inside when powered up, so I guess it's getting power. The screen on the custom PCB is completely dead. I asked him to reseat everything but it didn't help.
I realize that this is a shot in the dark, but is there anything else I can ask him to try? He has been very cooperative.
Well that is just the Mega. Is that the part that is not working ? Could it be that the flash memory accidentally got erased by the mail service ? Did you send it in anti-static wrapping ?
Best approach would be to confirm that the Mega is working by burning the bootloader again, confirm it is working with a 'blink-sketch' and then upload the project's firmware onto it again.