2 Jun
2002
2 Jun
'02
6:18 p.m.
My Kaypro 2'84 died.
I need a replacement as this was the only CP/M machine
for the display. A donation of a working 2'84 or 2x
would be greatly apreciated, after all it is going
towards education.
Thanks,
David G.
winnderfish_falls(a)yahoo.com
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3 Jun
3 Jun
1:30 p.m.
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4:41 p.m.
I've got to agree with Tony on this one ... these machines seldom appear in
the "thrift stores" I visit, and I don't think I've seen one in nearly
a
decade, even in the used/surplus computer stores. What's more, theyre so
elementary in their functions, consisting of standard TTL parts and
conventional peripherals, that you should encounter no serious difficulty
other than mechanical parts that may be broken. If it died on its own, it's
likely that an electrolytic capacitor in the PSUpr a tantalum on the main
board is at fault. If you unplug the power to the main board and suddenly
find the PSU provides the correct voltages, you should be able to repair the
thing easily, though you'll be much more proficient at desoldering IC's and
soldering sockets in their place when you're done.
Dick
----- Original Message -----
From: "Tony Duell" <ard(a)p850ug1.demon.co.uk>
To: <cctalk(a)classiccmp.org>
Sent: Monday, June 03, 2002 12:30 PM
Subject: Re: Wanted: Kaypro 2'84/2x
My Kaypro 2'84 died.
How dead? Does it do anything at all at power-up?
I need a replacement as this was the only CP/M
machine
Are you certain that it's going to be harder to repair the existing
machine than to find a replacement (as an aside, I've never seen a Kaypro
_anything_ in the UK). From what I've heard, though, Kaypros are pretty
standard circuitry and shouldn't be hard to repair.
-tony
11:46 p.m.
On Mon, 3 Jun 2002, Richard Erlacher wrote:
I've got to agree with Tony on this one ... these
machines seldom appear in
the "thrift stores" I visit, and I don't think I've seen one in nearly
a
decade, even in the used/surplus computer stores. What's more, theyre so
elementary in their functions, consisting of standard TTL parts and
conventional peripherals, that you should encounter no serious difficulty
other than mechanical parts that may be broken. If it died on its own, it's
likely that an electrolytic capacitor in the PSUpr a tantalum on the main
board is at fault. If you unplug the power to the main board and suddenly
find the PSU provides the correct voltages, you should be able to repair the
thing easily, though you'll be much more proficient at desoldering IC's and
soldering sockets in their place when you're done.
Well, before you start desoldering IC's you should remove the power
supply board and resolder all of the pins that mate up with the long
power connector. Kaypro's were infamous for developing a cracked solder
joint in one or more of the pins.
- don
Dick
----- Original Message -----
From: "Tony Duell" <ard(a)p850ug1.demon.co.uk>
To: <cctalk(a)classiccmp.org>
Sent: Monday, June 03, 2002 12:30 PM
Subject: Re: Wanted: Kaypro 2'84/2x
My Kaypro 2'84 died.
How dead? Does it do anything at all at power-up?
I need a replacement as this was the only CP/M
machine
Are you certain that it's going to be harder to repair the existing
machine than to find a replacement (as an aside, I've never seen a Kaypro
_anything_ in the UK). From what I've heard, though, Kaypros are pretty
standard circuitry and shouldn't be hard to repair.
-tony
4 Jun
4 Jun
12:20 a.m.
This is absolutely good advice. In a Kaypro there are only three major areas
of failure. The PSU, the Mainboad, and the monitor. If the PSU isn't putting
out, there's no reason to expect the rest of the machine to work properly. If
the mainboard IS working properly and you don't get a display, it's likely
you've got a monitor problem. How you go about figuring out whether one or
the other of those conditions is present is up to you, but if the PSU isn't
doing what it should, all bets are off.
Dick
----- Original Message -----
From: "Don Maslin" <donm(a)cts.com>
To: <cctalk(a)classiccmp.org>
Sent: Monday, June 03, 2002 10:46 PM
Subject: Re: Wanted: Kaypro 2'84/2x
Kaypro
On Mon, 3 Jun 2002, Richard Erlacher wrote:
> I've got to agree with Tony on this one ... these machines seldom appear
in
> the "thrift stores" I visit, and I
don't think I've seen one in nearly a
> decade, even in the used/surplus computer stores. What's more, theyre so
> elementary in their functions, consisting of standard TTL parts and
> conventional peripherals, that you should encounter no serious difficulty
> other than mechanical parts that may be broken. If it died on its own,
it's
> likely that an electrolytic capacitor in the PSU
or a tantalum on the main
> board is at fault. If you unplug the power to the main board and suddenly
> find the PSU provides the correct voltages, you should be able to repair
the
> thing easily, though you'll be much more
proficient at desoldering IC's
and
soldering
sockets in their place when you're done.
Well, before you start desoldering IC's you should remove the power
supply board and resolder all of the pins that mate up with the long
power connector. Kaypro's were infamous for developing a cracked solder
joint in one or more of the pins.
- don
> Dick
>
> ----- Original Message -----
> From: "Tony Duell" <ard(a)p850ug1.demon.co.uk>
> To: <cctalk(a)classiccmp.org>
> Sent: Monday, June 03, 2002 12:30 PM
> Subject: Re: Wanted: Kaypro 2'84/2x
>
>
> > >
> > > My Kaypro 2'84 died.
> >
> > How dead? Does it do anything at all at power-up?
> >
> > > I need a replacement as this was the only CP/M machine
> >
> > Are you certain that it's going to be harder to repair the existing
> > machine than to find a replacement (as an aside, I've never seen a
_anything_ in the UK). From what I've heard,
though, Kaypros are pretty
standard circuitry and shouldn't be hard to repair.
-tony
1:27 p.m.
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