Hi,
I've got a small PIC project with a 7805 regulator. It was working fine until I added ICSP (I soldered in the ICSP header and reprogrammed the uC without checking that it still worked in between :/ ) I have checked all my new connections and can't see any bridges.
After reprogramming via ICSP the regulator doesn't appear to function correctly. With input around 8V I get about 3V out, with input around 12V I get almost 4V out.
Is it possible that the 5V that is fed into the circuit by the programmer could have damaged the regulator (the regulator was not connected to a power source at the time)?
The project works ok if I connect 5V from an external source.
Regards,
Michael