20 May
2000
20 May
'00
5:34 p.m.
I'm depressed, I was just trying to lookup some info using DejaNews, and
couldn't get it to dredge up anything older than about a month ago. Now I
know why, they've taken the archives offline, and are apparently moving
thier servers to a new site. Between the 20th-26th the stuff from two
weeks to a year ago will be unavailable. The stuff older than that could
be offline for several months :^(
Don't know about everyone else, but DejaNews is one of the first places I
check when trying to solve a problem. I feel like I just had a lobotomy :^(
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)aracnet.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
20 May
20 May
6:14 p.m.
I'm depressed, I was just trying to lookup some
info using DejaNews, and
couldn't get it to dredge up anything older than about a month ago. Now I
Same here. I was trying to find the pinouts and specs on a TRS-80 Model 1
power supply when I got the bad news. (Bad news, ha ha ha, pun not intended
but somewhat funny?) I did find them somewhere else, though.
BTW, anyone have a spare TRS-80 Model 1 power supply hanging around? :-)
Or, could tell me how to build/repair one?
- Earl
7:28 p.m.
You might want to tweak Will Jennings. He recently snagged some of the
ancient TRS-80 stuff (data) lying about in my basement.
Dick
----- Original Message -----
From: Earl Evans <retro(a)retrobits.com>
To: <classiccmp(a)classiccmp.org>
Sent: Saturday, May 20, 2000 9:14 PM
Subject: Re: Warning: Most of DejaNews Archive Offline
> I'm depressed, I was just trying to lookup some info using DejaNews, and
> couldn't get it to dredge up anything older than about a month ago. Now
I
Same here. I was trying to find the pinouts and specs on a TRS-80 Model 1
power supply when I got the bad news. (Bad news, ha ha ha, pun not
intended
but somewhat funny?) I did find them somewhere else,
though.
BTW, anyone have a spare TRS-80 Model 1 power supply hanging around? :-)
Or, could tell me how to build/repair one?
- Earl
21 May
21 May
7:24 a.m.
New 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(a)xenosoft.com
<A HREF= "http://www.xenosoft.com/dogears" >DogEars</A>
9:42 a.m.
New subject: TRS-80 Model 1 Power supply (was: Warning: Most of DejaNews
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2:08 p.m.
New subject: Update: TRS-80 Model 1 Power supply (was: Warning: Most of DejaNews
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(a)p850ug1.demon.co.uk>
To: <classiccmp(a)classiccmp.org>
Sent: Sunday, May 21, 2000 11:42 AM
Subject: Re: TRS-80 Model 1 Power supply (was: Warning: Most of DejaNews
provided)
[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
Let me guess.... The neutral (mains midpoint) connection was all over the
place.
-tony
2:21 p.m.
New subject: Update: TRS-80 Model 1 Power supply (was: Warning: Most of DejaNews
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1:10 p.m.
New subject: TRS-80 Model 1 Power supply (was: Warning: Most of DejaNews
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(a)xenosoft.com>
To: <classiccmp(a)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(a)xenosoft.com
<A HREF= "http://www.xenosoft.com/dogears" >DogEars</A>
1:52 p.m.
New subject: 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(a)xenosoft.com>
To: <classiccmp(a)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(a)xenosoft.com
> <A HREF= "http://www.xenosoft.com/dogears" >DogEars</A>
>
1:59 p.m.
New subject: Cracking open brick-type transformers
Sorry for the blank message previous.... I am getting used to a new e-mailer
as my own x86 machine's hdd died the other day...
I have had good success with a hot knife in cutting open sealed "brick"-type
power packs and know that replacing the fuse concealed therein is likely to
restore function.
Another method I found a few years later is a hacksaw. Hack at the top of the
supply until you can cleanly remove the top part of the brick. This leaves a
much neater pack when you are done and easy access for future replacements...
An Atari enthusiast like myself then bested the above method by tapping out the
original (usually four) plastic 'welds' at the bottome of the pack and freeing
the guts rather quickly and cleanly.
Depending on your method of entry, an external fuse holder is either nice or
neccessary. I usually put them on with the hot knife method. Other methods lend
themselves better to re-entry for subsequent failures.
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(a)xenosoft.com>
To: <classiccmp(a)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(a)xenosoft.com
> <A HREF= "http://www.xenosoft.com/dogears" >DogEars</A>
>
9:08 a.m.
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1:39 p.m.
On Sun, 21 May 2000, Tony Duell wrote:
Of course the other way to find out the specs of the
TRS-80 model 1 PSU
box is to post here. Whereupon some mad hacker with a Model 1 Technical
Reference Manual to hand will look it up :-)
Unofficially, I call this the Encyclopedia Classiccompica :)
Sellam International Man of Intrigue and Danger
-------------------------------------------------------------------------------
Looking for a six in a pile of nines...
Coming soon: VCF 4.0!
VCF East: Planning in Progress
See http://www.vintage.org for details!
4:51 p.m.
New subject: I need to make a cable
I need to make a keyboard cable for one of my Texas
Instruments Portable Professional Computers. It is a
proprietary format with a standard CPU keyboard
connector on one end and a PS/2 female connector on the
other. I have a keyboard cable from a Texas
Instruments Professional Computer, which has the CPU
connector (and a grid-type plug on the other end) and
is a five wire cable. I had hoped to splice a standard
PS/2 cable onto it, but upon opening one of these up I
see there are only 4 wires so I'm a wire short (even
assuming that the missing wire was in the same spot).
I could solder the five wires to the conector pins (I
have a really nice Hakko soldering station), but this
would be a mess as you need to mutilate the cable
connector in order to get to the pins.
My question is, does anyone know of a PS/2 type cable
that has connections to all 6 wires that I could splice
onto the keyboard cable I have?
-W
6:09 p.m.
New subject: I need to make a cable
On Sun, May 21, 2000 at 06:51:37PM -0700, Wayne M. Smith wrote:
PS/2 cable onto it, but upon opening one of these up
I
see there are only 4 wires so I'm a wire short (even
assuming that the missing wire was in the same spot).
I could solder the five wires to the conector pins (I
have a really nice Hakko soldering station), but this
would be a mess as you need to mutilate the cable
connector in order to get to the pins.
Most likely not all pins are used; if memory serves there is
5V, ground, data, and clock. You can probably use a search engine
to find a PS/2 connector pinout on the web. And you can get PS/2
connectors at electronics stores like Fry's.
--
_______ Shawn T. Rutledge / KB7PWD ecloud(a)bigfoot.com
(_ | |_) http://www.bigfoot.com/~ecloud kb7pwd(a)kb7pwd.ampr.org
__) | | \________________________________________________________________
Get money for spare CPU cycles at http://www.ProcessTree.com/?sponsor=5903
22 May
22 May
8:59 a.m.
New subject: I need to make a cable
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8822
days inactive
8824
days old
14 comments
9 participants
participants (9)
-
ard＠p850ug1.demon.co.uk -
cisin＠xenosoft.com -
foo＠siconic.com -
healyzh＠aracnet.com -
retro＠retrobits.com -
richard＠idcomm.com -
rutledge＠cx47646-a.phnx1.az.home.com -
technoid＠cheta.net -
wmsmith＠earthlink.net