retrobits
Experienced Member
Hi all,
Picked up a Kaypro II over the weekend. It is partially functional, but has some issues. Thought I'd post about my experience, and validate the next steps.
The machine has been sitting in a closet for perhaps up to 20 years. The seller had powered it up to show that the screen works (prompts for boot disk). No original disks came with it.
Using Imagedisk, a 360K 5.25 drive, and DOS, I created a Kaypro II CP/M 2.2 boot disk. Since the seller had already powered it up once, I decided to risk another boot before internal inspection. At first, the Kaypro wouldn't boot, but after a few minutes (perhaps the drives need to re-loosen after the years?) it started booting reliably. Once the A> prompt appeared, a DIR yielded the file list. However, attempting to run any COM file resulted in BDOS sector error. The drives are obviously still not completely all there.
Also, the machine was in a smoker's home, so it does have a smoke smell and potential degredation of the moving parts and circuit boards.
Next steps:
To make the disks work, I am assuming I should clean the heads, check the belts for tightness and cleanliness, and then try again. I don't have a strobe to check for disk RPM. Remarkably, after all these years, I've never cleaned the heads on a floppy drive. Any best practices here? Also, any other comments?
I'm much less clear on how to clean the smoke residue out of the system. I can dismantle the case and the keyboard and clean what I can. Cleaning circuit boards seems to be less of an exact science. Some people say to use warm water and mild detergent (making sure to completely dry out prior to re-use, of course). Others say to use alcohol or acetone, but some say that's hazardous. What to do?
Thanks for any comments! This Kaypro II is in really nice cosmetic shape, and the circuitry seems to be functional. The screen is very crisp. Looking forward to restoring it to its 1982 glory.
- Earl
Picked up a Kaypro II over the weekend. It is partially functional, but has some issues. Thought I'd post about my experience, and validate the next steps.
The machine has been sitting in a closet for perhaps up to 20 years. The seller had powered it up to show that the screen works (prompts for boot disk). No original disks came with it.
Using Imagedisk, a 360K 5.25 drive, and DOS, I created a Kaypro II CP/M 2.2 boot disk. Since the seller had already powered it up once, I decided to risk another boot before internal inspection. At first, the Kaypro wouldn't boot, but after a few minutes (perhaps the drives need to re-loosen after the years?) it started booting reliably. Once the A> prompt appeared, a DIR yielded the file list. However, attempting to run any COM file resulted in BDOS sector error. The drives are obviously still not completely all there.
Also, the machine was in a smoker's home, so it does have a smoke smell and potential degredation of the moving parts and circuit boards.
Next steps:
To make the disks work, I am assuming I should clean the heads, check the belts for tightness and cleanliness, and then try again. I don't have a strobe to check for disk RPM. Remarkably, after all these years, I've never cleaned the heads on a floppy drive. Any best practices here? Also, any other comments?
I'm much less clear on how to clean the smoke residue out of the system. I can dismantle the case and the keyboard and clean what I can. Cleaning circuit boards seems to be less of an exact science. Some people say to use warm water and mild detergent (making sure to completely dry out prior to re-use, of course). Others say to use alcohol or acetone, but some say that's hazardous. What to do?
Thanks for any comments! This Kaypro II is in really nice cosmetic shape, and the circuitry seems to be functional. The screen is very crisp. Looking forward to restoring it to its 1982 glory.
- Earl