Post by murple on Mar 15, 2007 0:15:02 GMT -5
I have a Commodore 128D-CR that mostly works. The SID chip in it is fried (actually, it had a working SID but I swapped it out with the chip in a C128 that didnt work because of the problem I'm going to discuss in this post... if I can resolve this issue I will swap it back or try to find a new SID for it).
More importantly, the disk drive in it stopped working. It worked fine when I first got it (eBay) and for a while after. Then all of the sudden, it began being unable to read most disks. Some disks it can still read, but I'd say 9 out of 10 disks it can't even pull up a directory, and on the ones where it can get a directory, it often cant load programs.
I've opened the case, and the drive heads seem to move OK. The heads looked clean, but I did air-dust the drive and cleaned the drive heads too, just in case.
I read Ray Carlson's troubleshooting FAQ off the web and tried to do a disk initialization which can fix a confused drive. The head seemed to move, but then I'd get a READY. prompt without any error printing on screen first, but the LED on the drive would be flashing.
I tried to format a disk, another recommended step. It tells me I have a bad disk.
I would suspect alignment, but usually a misaligned drive can read disks it formats, but not disks from other drives. This can't even format a floppy which I know isn't bad (I can format it in my 1541).
Anyone ever run into this problem, and have ideas on how to make sure it's not alignment and other things that might give these symptoms?
More importantly, the disk drive in it stopped working. It worked fine when I first got it (eBay) and for a while after. Then all of the sudden, it began being unable to read most disks. Some disks it can still read, but I'd say 9 out of 10 disks it can't even pull up a directory, and on the ones where it can get a directory, it often cant load programs.
I've opened the case, and the drive heads seem to move OK. The heads looked clean, but I did air-dust the drive and cleaned the drive heads too, just in case.
I read Ray Carlson's troubleshooting FAQ off the web and tried to do a disk initialization which can fix a confused drive. The head seemed to move, but then I'd get a READY. prompt without any error printing on screen first, but the LED on the drive would be flashing.
I tried to format a disk, another recommended step. It tells me I have a bad disk.
I would suspect alignment, but usually a misaligned drive can read disks it formats, but not disks from other drives. This can't even format a floppy which I know isn't bad (I can format it in my 1541).
Anyone ever run into this problem, and have ideas on how to make sure it's not alignment and other things that might give these symptoms?