Re: C128 Power Supply repair

From: Gerrit Heitsch <*gerrit_at_laosinh.s.bawue.de*> Date: Wed, 18 Jul 2012 17:41:46 +0200 Message-ID: <5006D93A.4090001@laosinh.s.bawue.de> · gerrit_at_laosinh.s.bawue.de

On 07/17/2012 10:00 PM, Hegedűs István wrote:
> Thanks Gerrit!
>
> The C128 doesn't turn on with this PSU while it works with other C128
> PSU (I have tested it with an other one cause I have 2 machines). As it
> is physically next to the 4700uF/16V capacitor, it has damaged that
> capacitor too.

Replace that one too then. And while you're at it, also use a new 
rectifier / new diodes. In other words, replace everything but the 
transformer. :)

> The C128 hardware manual has some PSU schematics and it seems to be
> rather complicated for me... Of course I know the rectifier and filter
> cap part, that is easy. I will investigate your ebay item advise, seems
> promising.

The price is hard to beat... That circuit can also be used to rework old 
C64 supplies (the old kind, not the 'brick' type) where the regulator 
has shorted out. Will make them run cooler too.

  Gerrit

       Message was sent through the cbm-hackers mailing list