Charles Littell

macrumors newbie
Original poster
Jan 19, 2020
5
1
The Mac 128K I just picked up does not work. On start up it beeps and has a sad face with 04021C under it. Any idea what this code is trying to say I have looked around and there is nothing on the net that I could find that explained the code ?
 

Charles Littell

macrumors newbie
Original poster
Jan 19, 2020
5
1
A 04xxxx error is a memory fault. https://support.apple.com/kb/TA46376?viewlocale=en_US&locale=en_US

Check the +5volt rail and adjust if necessary. Otherwise, you may need to replace RAM chips.
Thank you for the information, I had to solder some old connections on the analog board and I went thru and put the memory on sockets with new memory chips. The computer now shows the disk with a question mark. So I have the computer that works but when I put a disk in the drive I think it is not working because I don't hear the drive making any noise. I did clean and lube the drive so it is not that!
 
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