Apple powerbook 100 repair

So I recently picked up a Powerbook 100 with floppy drive, PSU and books for a steal.

The unit has no power, I tested the PSU and it's dead.

It's power requirements are 7.5v @ 2amps, now finding a PSU with that spec is hard around here (plenty of 1amp ones around on ebay). I think it should boot at 1amp with no battery but am not sure :/

I have a ps2 slim PSU here which is 8.5v at 2amps .. Does anyone know the tolerance this machine has? I have read it's input is fused but haven't opened it yet.

The other option is to buy a PS1 Slim PSU which is 7.5v at 2.2amps (and the same color! ) but because fools over here label them as "Rare", I'll need to get a loan :/

I haven't gone through everything I have yet so if anyone knows other devices that use an adapter the same let me know, I might have it already

thanks

 

Surprisingly, the PSOne one will work great. In Australia? Try getting one from Japan or America. They are switching and this seller ships worldwide.

http://www.ebay.com/itm/USA-SELLER-...n-1-PSOne-AC-Adapter-Power-Cord-/321126301372

 

Thanks man PS: Mad profile pic btw

 

MAAD!

 

Your biggest problem is going to be the battery - those old PowerBooks used lead-acid batteries, and they will be as dead as disco by now...

 

He could probably convert it to NiCD or NiMH.

 

I can convert it but the problem is the battery is SLA, meaning there is no casing for it so in order to have a nice stock looking battery I'm going to have to custom make a plastic housing.

The latch that holds the battery in is also the front of the system and unfortunately the whole latch (front cover) is part of the battery. It can be done and I plan on doing it but that is a later project

Ok so I through caution to the wind and threw 8.5v at it, The screen lights up black and all I get is PSU noise from the speaker.
Hopefully the caps are bad, I'm going to get a correct PSU and confirm..

Then Ima open this sucker up and jab at it with pokey things

 

You could, but you would need to significantly rework the charger - those SLA batteries use a constant-voltage charger circuit with the charge being self limiting, and the Ni chemistry batteries use constant current and really need an EoC detector if you don't want to blow them up.

 

I would incorporate the charging circuit into the battery package