So I've had this Apple //e problem board for some years now. The board itself has some really bad sodering on all the RAM sockets, as well as the sockets for the EF-ROM and the S02. The fist RAM chip has a lot of bodge work (one of the pins seems to be free floating even) but as far as I can tell, everything is connected to what their supposed to be. The 'new' sockets appear to be double swipe, so decent quality. However, it still won't boot.
I've gone over all the sockets, swapped all the major chips (CPU, MMU, IOU, ROMS) with my other working //e's, replaced all the RAM with new old stock (admittedly Apple branded MT 4264s, but they test good in other machines). Actually, replacing the RAM made a big difference, since before the board would either give garbage screens or not boot at all. Now it's consistanty giving the Horizontal bars every time it gets power.
I know I'm missing something (obviously since it doesn't boot), but what?