8 Feb
2007
8 Feb
'07
5:46 p.m.
All the terminal chatter has reminded me, anyone got a good spare VT100
analog video board of the Elston variant? It's the last piece I need to
get my VT100 working again.
Julian
9 Feb
9 Feb
3:11 a.m.
In article <D0A43323EEC4C046801C1B71873472030186633F at HERMES2K3.CLCILLINOIS.EDU>,
"Wolfe, Julian " <ISC277 at CLCILLINOIS.EDU> writes:
All the terminal chatter has reminded me, anyone got a
good spare VT100
analog video board of the Elston variant? It's the last piece I need to
get my VT100 working again.
What's the Elston variant?
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
8:01 a.m.
Does the varient matter. IIRC, they're equivalent factory replacements.
I've got a couple of video boards. I fix the failed ones myself.
The biggest failure is the cap and diode at the center of the video board
(don't remember if that's the Elston or the Ball), $2.00 in Radio Shack
some solder and it's fixed.
Bill
On 2/9/07, Richard <legalize at xmission.com> wrote:
In article <
D0A43323EEC4C046801C1B71873472030186633F at HERMES2K3.CLCILLINOIS.EDU>,
"Wolfe, Julian " <ISC277 at CLCILLINOIS.EDU> writes:
All the terminal chatter has reminded me, anyone
got a good spare VT100
analog video board of the Elston variant? It's the last piece I need to
get my VT100 working again.
What's the Elston variant?
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
3:12 p.m.
Yeah, I've already tried that. It didn't fix the problem. Also, it should
be noted that Radio Shack's parts area has shrunk to something useless in
most cases.
Got any other suggestions? I have no idea what it could be. I've replaced
the flyback/choke, the PSU, and repaired the analog board. Only things left
are the logic board and the CRT. Maybe I should pull the analog board and
resolder it? I've got no clue.
Though I do have to say, the cap that went on the analog board, it was
pretty badly exploded, and the diode was brown. They both left some light
burnmarks on the board.
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of Bill Pechter
Sent: Friday, February 09, 2007 7:02 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Need an Elston analog video board for VT100
Does the varient matter. IIRC, they're equivalent factory
replacements.
I've got a couple of video boards. I fix the failed ones myself.
The biggest failure is the cap and diode at the center of the
video board (don't remember if that's the Elston or the
Ball), $2.00 in Radio Shack some solder and it's fixed.
Bill
On 2/9/07, Richard <legalize at xmission.com> wrote:
available for
download
In article <
D0A43323EEC4C046801C1B71873472030186633F at HERMES2K3.CLCILLINOIS.EDU>,
"Wolfe, Julian " <ISC277 at CLCILLINOIS.EDU> writes:
> All the terminal chatter has reminded me, anyone got a good spare
> VT100 analog video board of the Elston variant? It's the
last piece
I need to
get my VT100 working again.
What's the Elston variant?
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
3:56 p.m.
Julian Wolfe wrote:
Yeah, I've already tried that. It didn't fix
the problem. Also, it should
be noted that Radio Shack's parts area has shrunk to something useless in
most cases.
A Radio Shack manager told me straight up in November that they're
not restocking components in-store.
You can still order most anything you need online, and if you pick it
up at the RS store shipping is free and something like 48-hour delivery.
Doc
4:48 p.m.
A Radio Shack manager told me straight up in
November that they're not
restocking components in-store.
You can still order most anything you need online, and if you pick it
up at the RS store shipping is free and something like 48-hour delivery.
Here in Canada ( Same store -- different owner of the company )
they were selling printers -- A lexmark E232 B&W laser-- I picked one up.
About 6 months later I went to pick a new toner cartage, none in stock.
Web order only --- None at all in Canada. Parts I can see them having nothing
in stock with parts, but to sell a printer and not have toner at all.
7:32 p.m.
Yeah, I've already tried that. It didn't fix the problem. Also, it should
be noted that Radio Shack's parts area has shrunk to something useless in
most cases.
Got any other suggestions? I have no idea what it could be. I've replaced
the flyback/choke, the PSU, and repaired the analog board. Only things left
are the logic board and the CRT. Maybe I should pull the analog board and
resolder it? I've got no clue.
You've not even told us what the problem is!.
Now what _I_ would do is grab the printset (I assume the VT100 printset
is on the web somewhere...) and start by checking the PSU outputs. Are they
all correct?
Then connect a standard RS170 (TV rate) monitor to the video output BNC
socket. Doe you get video there? Does the terminal seem to work on the
external monitor. If so, then the logic board is probably working fine.
Now go back to the internal video syustem. Use an EHT probe to check the
EHT on the CRT anode connector (should be around 12kV I think). Is the
CRT heater glowing? Check the CRT gun electrode voltages. Do they seem
sane?
-tony
8:39 p.m.
The problem is, both the common diode and cap that fail, did, and now it
won't power the CRT on. The keyboard lights come on and I can go into setup
mode but there is no display. I will try the BNC output though.
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of Tony Duell
Sent: Friday, February 09, 2007 6:33 PM
To: cctalk at classiccmp.org
Subject: Re: Need an Elston analog video board for VT100
Yeah, I've already tried that. It didn't fix the problem.
Also, it
should be noted that Radio Shack's parts area
has shrunk to
something
useless in most cases.
Got any other suggestions? I have no idea what it could be. I've
replaced the flyback/choke, the PSU, and repaired the
analog board.
Only things left are the logic board and the CRT.
Maybe I
should pull
the analog board and resolder it? I've got no
clue.
You've not even told us what the problem is!.
Now what _I_ would do is grab the printset (I assume the
VT100 printset is on the web somewhere...) and start by
checking the PSU outputs. Are they all correct?
Then connect a standard RS170 (TV rate) monitor to the video
output BNC socket. Doe you get video there? Does the terminal
seem to work on the external monitor. If so, then the logic
board is probably working fine.
Now go back to the internal video syustem. Use an EHT probe
to check the EHT on the CRT anode connector (should be around
12kV I think). Is the CRT heater glowing? Check the CRT gun
electrode voltages. Do they seem sane?
-tony
3:13 p.m.
There's two types of electronics in a VT100, either the Elston CRT and
analog board, or the Ball Brothers CRT and analog board. See the VT100
service manual on Bitsavers for more details.
-----Original Message-----
From: cctalk-bounces at classiccmp.org
[mailto:cctalk-bounces at classiccmp.org] On Behalf Of Richard
Sent: Friday, February 09, 2007 2:12 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: Need an Elston analog video board for VT100
In article
<D0A43323EEC4C046801C1B71873472030186633F at HERMES2K3.CLCILLINOIS.EDU>,
"Wolfe, Julian " <ISC277 at CLCILLINOIS.EDU> writes:
All the terminal chatter has reminded me, anyone
got a good spare
VT100 analog video board of the Elston variant? It's the
last piece I
need to get my VT100 working again.
What's the Elston variant?
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available
for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
3:19 p.m.
In article <006401c74c86$d1d87120$920718ac at CLCILLINOIS.EDU>,
"Julian Wolfe" <fireflyst at earthlink.net> writes:
There's two types of electronics in a VT100,
either the Elston CRT and
analog board, or the Ball Brothers CRT and analog board. See the VT100
service manual on Bitsavers for more details.
Presumably the analog boards are a little different for the different
tubes? Somehow I expected DEC to be more standardized, but I guess
they standardized at the point where the analog board plugs into the
rest of the unit.
--
"The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download
<http://www.xmission.com/~legalize/book/download/index.html>
Legalize Adulthood! <http://blogs.xmission.com/legalize/>
3:41 p.m.
I think I can find one here for you. I'm sorry I forgot to get back to you
on the 11/34 parts. Do you still need them?
Paul Anderson
On 2/8/07, Wolfe, Julian <ISC277 at clcillinois.edu> wrote:
All the terminal chatter has reminded me, anyone got a good spare VT100
analog video board of the Elston variant? It's the last piece I need to
get my VT100 working again.
Julian
7:03 p.m.
All the terminal chatter has reminded me, anyone got a good spare VT100
analog video board of the Elston variant? It's the last piece I need to
get my VT100 working again.
Two questions :
1) Why do you need a new board. Unless it's actually missing, it's very
likely the old board can be repaired, almost all the components on it are
standard
2) If you do ened a replacement board, why does it have to be that brand?
The 3 boards I've seen are all directly itnerchangeable.
-tony
6379
days inactive
6381
days old
11 comments
8 participants
participants (8)
-
ard＠p850ug1.demon.co.uk -
bfranchuk＠jetnet.ab.ca -
doc＠mdrconsult.com -
fireflyst＠earthlink.net -
ISC277＠CLCILLINOIS.EDU -
legalize＠xmission.com -
pechter＠gmail.com -
useddec＠gmail.com