Hello everyone :)
My Uno (genuine R3), which has worked fine for over 2 years now, suddenly does not appear in the device manager anymore, not even as an unknown device.
- Atmega 328 was removed a while ago, since I'm using the Uno as a programmer most of the time.
- When connected to USB, "ON" and "L" Leds light up, the "L" led sometimes blinks randomly or appears very dim. Weird.
I think that the 16u2-Chip is either fried or has to be reprogrammed. I already read quite a few articles about doing that, but it seems as if the 16u2 doesn't want to enter DFU-mode.
So is there an idiot proof way to determine whether or not the 16u2 is fried?