Hi,
Saw smoke rise from my atmega168 based PCB board. Now I cannot connect to the ATmega168 in ISP mode. I looked at the circuit board under a high magnitude microscope but did not see any evidence of where the smoke originated. There was no obvious places where the smoke originated on the atmega 168 or the surrounding components. Also the voltage regulators still work.
Should there not be whole in one of the chips where the smoke came from? Also the led status light no longer light up and those were turned on by the atmega 168 interrupt pin.