I have a Colecovision that won't power on. No black screen, no BIOS screen, nada.
I've verified via multimeter that the power supply seems to have 12, 5, and -5 volts where it should, including where it connects to the board, but when I switch the power on, the 5 volt reading jumps down to 1.6.
Is this an expected drop, or an indication that I've got a bad power supply?
If the former, where should I look next?