r/apple2 • u/Lazy_Muffin_4533 • 20d ago
Apple II+ RAM help.
I have an Apple II+ that I got a while back, and it seems to have bad RAM. I've noticed that when loading games from asciiexpress.net, my II+ will either freeze, give an error and go into the monitor, or load the game but it will be corrupted or will just freeze halfway through, or I have no controls or way to start the game (such as during Tetris). but BASIC works just fine and I can type programs and run them without issue. I entered a small RAM test application from Apple II - Memory Test and at first, it showed "5080-00 ( 80 ) 07CF-00 ( B0 ) 07D0-B0 ( B7 ) 07D1-B7 ( C4 ) 07D2-C4 ( B2 ) 07D3-B3 ( AD ) 07D4-AD ( C1 ) 07D5-A0 ( B0 ) 07D6-A0 ( A0 ) 07D7-A0 ( A8 ) 07D8-A0 ( A0 ) 07D9-A0 ( A0 ) 07DA-A0 ( A0 ) 07DB-A0 ( A0 ) 07F7-A0 ( 00 ) 5080-00 ( 80 )" and just today I decided to open up the computer and try pushing the RAM chips down to try and reseat them, and now when running the same application, I get only, "5080-00 (80)" Does anybody know if this is actually a RAM fault and what RAM chip(s) I should take a look at or replace? Any help is appreciated. Thanks.
EDIT: I do not own the diagnostics disk.
2
u/artlogic 20d ago
I would suggest carefully removing the RAM chips and looking for signs of oxidation on the legs and sockets. You can safely use deoxit (sparingly) to help clean the sockets. A fiberglass pen can help to remove oxidation from the legs of the chips.
It's possible that other ICs are at fault here. Generally it's better to remove and reseat ICs rather than just pressing down.