I remember your older post. You tested the board with some of the RAM missing? The Apple II can run on 1 row of RAM but the row has to be completely filled. If you have RAM missing on a row, it will display screen with jumbled characters because it thinks that the RAM is bad. So you can remove all the RAM and only fill in the bottom row to test the RAM 16K group (8 chips) at a time.
Any other cards came with your system? You will need a Language Card to have 64K; it goes into Slot 0 AND you remove 1 RAM Chip from the motherboard and put it on the Language card, then you take the ribbon cable from the card and put in into the RAM Socket on the motherboard. You need to know this if you remove all the cards and there is a RAM Chip missing - it is on the Language Card and you need to transplant it back on the motherboard or else it will error when you turn it on.
Q: (not asked on the other thread) Does the computer "Beep" when you turn it on? It means a lot whether it does or not.
Any other cards came with your system? You will need a Language Card to have 64K; it goes into Slot 0 AND you remove 1 RAM Chip from the motherboard and put it on the Language card, then you take the ribbon cable from the card and put in into the RAM Socket on the motherboard. You need to know this if you remove all the cards and there is a RAM Chip missing - it is on the Language Card and you need to transplant it back on the motherboard or else it will error when you turn it on.
Q: (not asked on the other thread) Does the computer "Beep" when you turn it on? It means a lot whether it does or not.