First post, by Planet-Dune
Yesterday I tried to fix a Commodore PC 40-3. The problem it was having is it kept rebooting endlessly after the initial ram check. I have another PC 40-3 so figured I would switch the power supply and see if that had any effect. As the main power supply cable to the motherboard is pretty short I was forced to fully de-assemble the faulty one. In the process I noted the Dallas RTC chip on the board (which was empty and was planned to be replaced), to check it out I popped it off and then back into its socket. Connected the power and turned on the machine, ever since the PC does not boot at all anymore. The power supply works, the lights on the case work but it gives nothing on screen and doesn't seem to do any kind of post.
After checking some pictures I came to the conclusion I reconnected the Dallas chip the wrong way. My question, as I really did not do anything else to the board, is it possible to damage the motherboard by having the RTC battery chip connected upside down? I did note the amount of pins is not the same on both sides so I am guessing that, even though the board allows you to insert it wrong, the input/outputs are not the same.
There was no visual indication something happened (no smell, sound, caps popping etc).. added some pictures, in short, is it possible or very unlikely and something else happened?
