PB 150 non-keyboard keyboard issues

[Juror22]

I recently got a PB 150, which just needed a little fixing up.  I cleaned and re-greased the hinges (fixed two of the lid screws), replaced the battery (soldered on the interconnect board), did some additional cleaning (it had some minor liquid damage in the past) and now it is all fixed up,or so I thought.

Before fixing it up, it booted up fine.  After the work, it still boots, but as the extensions are loading, I get restart dialog with the following message:

"Sorry, a system error occurred.  General Controls Bus Error  To temporarily turn off extensions, restart and hold down the shift key."

Starting up with extensions off, it boots, but then once up, the following keyboard keys are reversed y & z as well as / & 0 and several others.  I have switched in another keyboard and triple (maybe more) checked the connector for the keyboard and it boots up the same, with the same message.

Any suggestions ? (I don't have another interconnect board for this model, although I do have a couple to some other models).

 

[Bunsen]

Have you tried a clean system software install?  Or, temporarily for testing, booting from an external SCSI drive with a fresh install on it?  Or a bootable CD-ROM?

 

[Juror22]

I had not thought of that - I will give that a try this weekend.

 

[techknight]

Im still puzzled at the reversed keys? 

 

[Juror22]

I picked up some additional PB 150 parts a few weeks back and last night I finally finished swapping out parts, greasing hinges, replacing the internal soldered battery, etc.  So now that it is all fixed up (it still had the other issues with the extensions and the key swapping) I trotted out the Apple CD ROM, dug out the powerbook SCSI adapter cable, and the legacy restore CD.

1) hooked it all up, no CD on startup

2) swapped the cable and terminator on the CD, now the CD shows up on boot

3) rebooted starting from the CD, attempted to re-install 7.5.3, mounting disks fails with -108 error on disk 9

4) rebooted to HD, copied install disks to HD, ran installer and it works fine - CD issue?

5) rebooted with backup copy of legacy restore CD and same error - CD ROM issue?

6) swapped out CD with a spare, same issue (-108 on disk image 9)

7) mounted each disk image myself (instead of using net installer script from the CD), with checksum, all mounted, but the installer would not start  (not enough memory - only the stock 4MB onboard)

8 ) quit the disk image utility,  started the installer, runs, albeit slowly, and successfully completed the installation.

9) rebooted, extensions all work and the keyboard issue is gone - everything works correctly.

It took some time to get back to this and sort it out, but Bunsen was correct - the OS re-install cured its ills.

Gonna do some retro gaming on this over the weekend to celebrate - nothing too taxing though, it still only has 4 MB of memory!