TRS-80 Model III

From: Fred Cisin <>
Date: Wed Aug 7 20:14:00 2002

On Wed, 7 Aug 2002, Sellam Ismail wrote:
> > What happens if you press the <Break> key down while powering
> > should take you into ROM Basic with a "cass?" prompt.
> Nope, still no video. The video is hosed. Along with the rest of the
> units I've tried.
> Now I know why stuff like TRS-80s and C64s were so derided back in the
> day: the shit just don't last!
> On the other hand, I've rarely met an Apple ][ that didn't boot.
> Coincidence? You be the judge.

Actually, I rarely encounter a stored Apple ][ (or ][+) that will boot
until I press down on each and every chip to get through the corrosion of
the cheap sockets.

That is EXACTLY the same problem as most of the TRS-80s!

Just like Apple, they cut too many corners on connector quality. Cleaning
connections will usually get them working. In addition, some of the
TRS-80 keyboards (there are a couple of different types) won't work after
extended storage unless you open them up and clean them (or just work the
keys A LOT). A Rochester Dynatyper or KGS80 keyboard actuator works great
for that (a box of solenoids that was intended to sit on a typewriter
keyboard to substitute for a printer)

> Well, I have no boot disk. I'm trying to see if this machine works.
> Apparently it does to an extent but the video definitely has a problem.
> Nobody knows how to fix this?

Once you've cleaned the connector contacts, ...
If it still won't work, then better ask Tony!

Grumpy Ol' Fred
Received on Wed Aug 07 2002 - 20:14:00 BST

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