Cracking open Brick-type power supplies
Richard Erlacher wrote:
> A friend of mine routinely had to crack open his TRS-80 PSU's. He did this
> with some care, but mostly a plastic mallet and a chisel. Once the deed
> was done, he used MEK to glue the case back together. This seemed to me
> like a lot of trouble. I'd put in an externally accessible fuse holder
> arrangement of some sort so I didn't have to do this more than once.
>
> Dick
> ----- Original Message -----
> From: Fred Cisin (XenoSoft) <cisin_at_xenosoft.com>
> To: <classiccmp_at_classiccmp.org>
> Sent: Sunday, May 21, 2000 10:24 AM
> Subject: TRS-80 Model 1 Power supply (was: Warning: Most of DejaNews
>
> > On Sat, 20 May 2000, Earl Evans wrote:
> > > BTW, anyone have a spare TRS-80 Model 1 power supply hanging around?
> :-)
> > > Or, could tell me how to build/repair one?
> >
> > The good news is that MOST (but certainly not ALL) problems with the model
> > 1 power supply are nothing more than a blown fuse! All that is usually
> > needed is to solder in a new fuse.
> >
> > The bad news is that the case is glued together.
> >
> > Fortunately the glued joint tends to be substqantially weaker than the
> > rest of the case.
> >
> > Although some, such as Tony, might have a much better way to open the
> > case, brute force will usually do. Swinging it by the cord (now I'm SURE
> > that Tony would have a better way :-), slam it down onto a carpeted floor.
> > Gradually increase the level of violence until it cracks open, without
> > getting rough enough to shatter it all over the place.
> >
> > Solder in a new fuse, and glue the case back together.
> >
> >
> > A Dremel saw might do the job, but this is the technique that we used at
> > the 6th? West Coast Computer Faire to repair half a dozen of them. (Show
> > management insisted that there was NOTHING WRONG with the power provided)
> >
> >
> > I sold some of my model 1 stuff at VCF, and Eric got most of the rest.
> >
> > --
> > Grumpy Ol' Fred cisin_at_xenosoft.com
> > <A HREF= "http://www.xenosoft.com/dogears" >DogEars</A>
> >
Received on Sun May 21 2000 - 17:52:19 BST
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