Update: TRS-80 Model 1 Power supply (was: Warning: Most of DejaNews

From: Earl Evans <retro_at_retrobits.com>
Date: Sun May 21 18:08:35 2000

Hi folks,

Well, this power supply is plastic, but has four screws holding it together.
It wasn't obvious, because the screwholes were mounted underneath the rubber
feet (which I had to pull off). I discovered this after being somewhat
brutal with the power supply...hope I didn't destroy it in the effort to
open it. Well, transformers are tough devices :-)

All who guessed it was the fuse...bingo! The fuse is indeed out to lunch.
I'm off to Fry's to get a new fuse. I'll solder it in, and report back with
the results...

- Earl

----- Original Message -----
From: "Tony Duell" <ard_at_p850ug1.demon.co.uk>
To: <classiccmp_at_classiccmp.org>
Sent: Sunday, May 21, 2000 11:42 AM
Subject: Re: TRS-80 Model 1 Power supply (was: Warning: Most of DejaNews


> [TRS-80 Model 1 PSUs]
>
> > 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
>
> Oh, I like it :-)....
>
> I normally use the knife blade on my Leatherman and run it carefully
> round the seam between the 2 parts of the case. Then crack the case
> apart. Or at least that's how I open up most 'sealed' AC adapters. As I
> mentioned in my other posting, the UK model 1 PSUs are in metal cases and
> have 4 screws holding them together ;-)
>
> > 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
>
> I like it......
>
> > management insisted that there was NOTHING WRONG with the power
provided)
>
> Let me guess.... The neutral (mains midpoint) connection was all over the
> place.
>
> -tony
>
Received on Sun May 21 2000 - 18:08:35 BST

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