TRS-80 Model III and IV parts needed (keycaps, keyboard switch, ribbon cable, floppy drive parts)

rescue rescue at
Tue Nov 19 12:52:31 CST 2019

On 2019-11-05 14:00, rescue wrote:
> So, on this Model III I'm working on the following keycaps are 
> missing:
> 1/! key
> right shift key

Still looking for these or a donor model I, III, or IV keyboard.

> Looks like keycaps from a Model III, and possibly a model I would
> work. Probably a Model IV keycap for 1/! would work, but I think the
> right shift key would be different between a Model III and Model IV.
> I also need one of the ALPS switches as the '+' part of the stem is
> broken off.

still looking here too.

> In addition, on the drive (Texas Peripherals), there is a plastic
> component that screws onto the aluminum arm with the diskette
> retaining hub with 2 screws.... it then accepts two plastic pins that
> connect this piece to the drive door.  I am missing on of the plastic
> pins and the plastic piece is cracking.
> Anyone have any of these parts kicking around.

I managed to effect repairs using superglue, baking soda, and a couple 
of small steel pins that I think were pulled from a dead hard drive at 
some point
(turned out to be the perfect diameter, though a bit shorter than the 
factory plastic pins).

The superglue/baking soda technique is pretty amazing.

> On a Model III upgraded to a Model IV I have, the ribbon cable to the
> serial/com board has 'self destructed' as the glue failed, so once
> removed it could not be reconnected.  Interestingly the cable for the
> floppy controller did not deteriorate ?????

Still looking for one of these flexible ribbon cables for a Model IV (I 
presume Model III is the same too).

> Sadly on the upgraded Model III someone converted it to 3 drives,
> using an original full height drive for the 1st drive (at the 
> bottom),
> and put 2 HH drives in the top bay.  To make room for the eject
> control on the top drive, the upper case has been notched.  It would
> be nice to find an upper case for a Model III and do away with that
> notch.... or alternately an empty Model IV case (top and bottom).

Woud still like to fine either:

1. a Model IV case top and bottom or
2. a Model III top case

In the even of #2, it would be nice to find a Model IV case badge to 
replace the Model III badge.... but that would just be icing on the 

> Thanks to anyone with any TRS-80 'parts vault' that may have these
> parts available....  It has been a long time since I have touched a
> Model I/III (last time was probably 1983 :-) ).  Looking forward to
> getting the 3 systems I have up and running (Model I with Expansion,
> Model III, and a Model III upgraded to a Model IV).
> Thanks in advance,
> -- Curt

Thanks again if anyone has any source or lead on any of the above 
TRS-80 parts,

-- Curt

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