Powerbook 140 with screen issues

[pintodave]

Well dark, I should have thought of that! I ended up putting this 160 keyboard I got, on the 140. It has less wear and less yellowing.

Caps are due in on Saturday, sounds like Sunday I will have some time at the repair bench to get this all finished. I will be using the 140 to format the 120mb drive from my duo 230 as well and get the larger drive in there again.

 

[pintodave]

Caps arrived today, screen working like new again! Will post pix tomorrow.

New problem, the floppy drive won't read anything. I disassembled and cleaned and lived it, also cleaned off the heads and no change. Anyone have a replacement set of heads or a drive they would like to get rid of on the cheap?

 

[Elfen]

That's great to hear! Can't wait for the pics!

As for the floppy drive? I do not know. I'm going through something similar with an LC III floppy:

https://68kmla.org/forums/index.php?/topic/23728-a-dead-internal-floppy-drive/

As TechKnight suspects, its the caps.

 

[techknight]

Or.. with mobile drives, its possible it had been dropped/jarred, and it WILL knock the heads out of alignment. 

Easiest way to determine this is format a diskette in that particular drive. it should be able to read/use it. but no other system will. and vice versa. 

You can realign the heads by loosing the locking screw to the stepper motor and rotate the motor a little bit at a time until it locks in. 

 

[pintodave]

Well I attempted to format a disk with the drive and it fails the format during the verification process. Verdict, dead?

 

[techknight]

what system? with a newer system software, itll start marking the bad sectors. Unless it cant format track 0, itll spit it out instantly. 

its equally possible the head itself has failed. Rare, but possible. Its more likely the stepper motor is stuck and the head cant move. 

 

[pintodave]

System 6.0.8

 

[techknight]

yea you need at least system 7, maybe 7.5 to do a bad sector format. 

 

[pintodave]

So I managed to get my hands on a replacement floppy drive for dirt cheap, swapped it out and all is well again!