I have gone back to check some tracks in the leak-damaged area and I am
having some difficulty verifying the connections to one of the chips.
Does anyone have one of these machines, preferably working, that could help
me to check a few connections?
Regards
Rob
Can you tell me where the batteries are supposed to be, on which board?
I disassembled the machine, extracted the 4 motherboards, I did not see
any batteries anywhere.
If they are externalized, maybe I removed them a long time ago in the
idea of replacing them, but I have not yet found where the
My Convex C220 arrived about a week ago, so I now have a C1, C1 XL, and a
C220. A C240 will follow in a few weeks. Along with the C220 came some
installation tapes, and a large volume of documentation (some 300
documents). As long as I don¹t receive any objections to the being online
from HP (curre
Yes ! I found it !
http://zeltrax.com/classiccmp_forum/06.jpg
You are right, there was indeed a beginning of corrosion with a leaking
battery. I had taken it away, I could not remember it at all.
I still have to find the voltage of this missing battery, do you know
it? Otherwise I have this UT
I think this is the third time he has listed RL02K packs with the same
image. Either the buyer doesn't pay or they just have a huge number of
them. I bought some 8in floppies from the same seller. They are from
Rutherford Appleton Laboratories, so I assume the packs are too.
There is another selle
> -Original Message-
> From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Dominique
> Carlier via cctalk
> Sent: 30 July 2017 12:44
> To: jim stephens via cctalk
> Subject: Re: Sperry UTS 40 on Ebay - Statesboro, Georgia
>
> Can you tell me where the batteries are supposed
Hi all
I try and boot up most of the working systems I’ve got at least 2-3 times a
year, and on a recent boot up of a Cambridge Workstation, I got the dreaded
smoke.
The system works fine, but the PSU is clearly stressed. The PSU is a ‘VMS
2691A’, made in the UK, and it looks like the problem
On 07/30/2017 10:59 AM, Ian Frost via cctalk wrote:
Any body any experience in fixing these old Acorn PSUs - or managed to
source alternative modern supplies?
There wasn't anything "special" about them, in that the outputs were
typical for "small computer with a hard disk" (i.e. +5V and +12V a
On Sun, Jul 30, 2017 at 5:18 PM, Jules Richardson via cctalk
wrote:
> On 07/30/2017 10:59 AM, Ian Frost via cctalk wrote:
>>
>> Any body any experience in fixing these old Acorn PSUs - or managed to
>> source alternative modern supplies?
In general smoke from a power supply that keeps on working
The PSUs in the Acorn BBC Micros are we'll know for blowing caps. Replacing
caps is a standard thing when bring any BBC Micro back to life.
The StarDot forum is a good place to ask specifics about a Cambridge
Workstation - http://www.stardot.org.uk/forums/
On 30 July 2017 at 17:28, Tony Duell v
On 2017-07-30 12:18 PM, Jules Richardson via cctalk wrote:
On 07/30/2017 10:59 AM, Ian Frost via cctalk wrote:
Any body any experience in fixing these old Acorn PSUs - or managed to
source alternative modern supplies?
There wasn't anything "special" about them, in that the outputs were
typical
On 07/30/2017 11:28 AM, Tony Duell wrote:
On Sun, Jul 30, 2017 at 5:18 PM, Jules Richardson via cctalk
wrote:
On 07/30/2017 10:59 AM, Ian Frost via cctalk wrote:
Any body any experience in fixing these old Acorn PSUs - or managed to
source alternative modern supplies?
In general smoke from
On Sun, Jul 30, 2017 at 8:17 PM, Jules Richardson via cctalk
wrote:
>> The former are the ones that normally fail, but I would change the lot.
>
>
> I'd be inclined to agree in the case of any class X/Y caps as they're a
> known failure point in any piece of vintage equipment... but not every
> s
On 7/30/2017 4:43 AM, Dominique Carlier via cctalk wrote:
Can you tell me where the batteries are supposed to be, on which board?
I disassembled the machine, extracted the 4 motherboards, I did not
see any batteries anywhere.
If they are externalized, maybe I removed them a long time ago in th
> On Jul 29, 2017, at 11:08 AM, ANDY HOLT via cctalk
> wrote:
>
>
>
> I guess that depends on your opinion of "reasonable".
>
> I have a number of 8mm home videos my father made but every place I looked
> at was prohibitively expensive (several hundred dollars per reel!!)
Wow. I just d
Thanks a lot, but as described in my last post, I finally found the
location of the missing battery. I repast the text here:
Yes ! I found it !
http://zeltrax.com/classiccmp_forum/06.jpg
You are right, there was indeed a beginn
On Sun, 30 Jul 2017, Paul Koning via cctalk wrote:
On 8 mm types: there's the original 8 mm (later called "double 8"
because the unexposed film is essentially 16 mm film which is exposed on
one side, flipped over, and exposed on the other side, then slit in half
to make 8 mm finished film).
T
Hi all
I try and boot up most of the working systems I’ve got at least 2-3 times a
year, and on a recent boot up of a Cambridge Workstation, I got the dreaded
smoke.
The system works fine, but the PSU is clearly stressed. The PSU is a ‘VMS
2691A’, made in the UK, and it looks like the problem
Anyone know the spec s for the tape drives in a ESS5 exchange ?
Light green? Was it battery electrolyte? Wash it with vinegar (yes,
vinegar) and after, wash with a good detergent and warm water.
I did a video of the washing part, saving a macintosh.
https://www.youtube.com/watch?v=ez5IbF39SRY
(in portuguese, since I'm Brazilian :) But you can watch it and under
What is the best way to clean a ( populated ) board lightly oxydized , that
shows light green copper oxyde spots ( only on the components side ) ??
Toothbrush + ??
http://www.tape-replacement.com/support/lucent-at-t-5ess/
I've seen M4 Data 9914V drives configured for 48v and At&T part numbers
https://en.wikipedia.org/wiki/5ESS_Switching_System
On 7/30/17 11:53 AM, Pete Lancashire via cctalk wrote:
> Anyone know the spec s for the tape drives in a ESS5 exc
*I still suspect PSU (not food ^^ bad translator)
On 30/07/2017 22:44, Dominique Carlier via cctalk wrote:
Thanks a lot, but as described in my last post, I finally found the
location of the missing battery. I repast the text here:
Yes ! I found it !
---
On 07/30/2017 01:53 PM, Pete Lancashire via cctalk wrote:
Anyone know the spec s for the tape drives in a ESS5 exchange ?
Relabeled CDC Keystone 92181? I'm pretty sure they did call
logging on these. Very likely the Keystone was connected to
a 3B2 that received the data over some comm format
So, I have lately been using PDP11GUI to retrieve images of RK05 disk packs and
to write images to these packs on a PDP-11. This is awesome, but its a bit
frustrating that it takes a couple hours to read or write an image this way.
I do, however, have a couple of DR11-C parallel interface cards
I got things totally mixed up, The email to the CC list was suppose to be
1ESS and other one to a different list was suppose to be 5ESS
On Sun, Jul 30, 2017 at 2:00 PM, Al Kossow via cctalk wrote:
>
> http://www.tape-replacement.com/support/lucent-at-t-5ess/
>
> I've seen M4 Data 9914V drives
That was suppose to be 1ESS NOT a 5
On Sun, Jul 30, 2017 at 11:53 AM, Pete Lancashire
wrote:
> Anyone know the spec s for the tape drives in a ESS5 exchange ?
>
27 matches
Mail list logo
