Difference between revisions of "Kaypro"
From jWiki
Jump to navigationJump to search
Line 7: | Line 7: | ||
== Log (most recent first) == | == Log (most recent first) == | ||
* 2A fuse on mains side blew, probably when RIFA capacitor failed | |||
* RIFA film capacitors in PSU replaced, they're notorious for failure after a long time. PSU still does not seem to provide rails. Fault in other components? | * RIFA film capacitors in PSU replaced, they're notorious for failure after a long time. PSU still does not seem to provide rails. Fault in other components? | ||
* Floppy seems fine, fault is in PSU. While diagnosing, got single arc in some PSU component. Does not boot, does not provide rails. | * Floppy seems fine, fault is in PSU. While diagnosing, got single arc in some PSU component. Does not boot, does not provide rails. |
Revision as of 20:55, 20 March 2022
Log (most recent first)
- 2A fuse on mains side blew, probably when RIFA capacitor failed
- RIFA film capacitors in PSU replaced, they're notorious for failure after a long time. PSU still does not seem to provide rails. Fault in other components?
- Floppy seems fine, fault is in PSU. While diagnosing, got single arc in some PSU component. Does not boot, does not provide rails.
- Discover that disconnecting floppy allows boot to BIOS, suspect fault there causing overcurrent
- Does not boot, squealing/chirping noise, manual indicates short in a component
- Initial boot(s): HDD error of some sort
Reference
MFM
- David Gesswein's BeagleBone-based MFM emulator
- Kaypro 10 with MFM Hard Drive Reader/Emulator
- floppy (*not* HDD) MFM in Glasgow
- whitequark seems to intend to do MFM drives at some point