Hello, a friend of mine just gave me this APM 1 board.
the mission planner cannot connect or program it, I also tried with an USBASP on the ISP connector of both atmega2560 and 328 but the answer is always "target doesn't answer". when powered a red led is lit.
where can I start to look for faults? is it worth? I mean, if I can fix this board, will I be able to run all the latest firmware or is it already obsolete?