Awesome! Congratulations!
Marc
> From: Dominique Carlier
> Date: Tuesday, August 29, 2017
> Subject: Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring and
> restarting
> YES! The monster booting again! :-)
On Tue, Aug 29, 2017 at 10:44 PM, Dominique Carlier via cctalk
wrote:
> YES! The monster booting again! :-)
Congratulations! Well done!
Thanks for sharing the story and the pictures.
--
Regards,
Torfinn Ingolfsen
YES! The monster booting again! :-)
Thus after checking the condition of the capacitors and the rectifying
diodes by interchanging the 5v sources under the advice of Curious Marc,
a finally swapped Q12 and Q13, find the dead one, replace Q13. Following
the advice of Christian I raised both reg
On Sat, 26 Aug 2017, Dominique Carlier wrote:
I have temporarily replaced the 2N6471 by an approaching equivalent, I makes
the settings to get very exactly + 5V on both outputs and the machine
restarted, finally! YES !! :-)
[...]
then 02, 03 !! 04 !!! 05 !! And then ... nothing, and since i
Dominique, I just want to say how impressed I am with your work here, as
well as the way you're documenting it. This is fantastic stuff!
There's a lot of emails on this thread for me to catch up on from the past
month. But if I have one request, it's that you post any additional pics
you might h
From: cctalk on behalf of "cctalk@classiccmp.org"
Reply-To: Dominique Carlier , "cctalk@classiccmp.org"
Date: Wednesday, August 23, 2017 at 6:17 AM
To: "cctalk@classiccmp.org"
Subject: Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring and
restart
: *Dominique Carlier , "cctalk@classiccmp.org"
*Date: *Wednesday, August 23, 2017 at 6:17 AM
*To: *"cctalk@classiccmp.org"
*Subject: *Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 -
Restoring and restarting
Here is the situation.
The + 5V 12A that collapses comes
uot;
*Reply-To: *Dominique Carlier , "cctalk@classiccmp.org"
*Date: *Wednesday, August 23, 2017 at 6:17 AM
*To: *"cctalk@classiccmp.org"
*Subject: *Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 -
Restoring and restarting
Here is the situation.
The + 5V 12A that collapses comes
Hi all,
Thank you Marc, I will follow your advice. Doubts must be removed. I
would be glad to know that the big (and expensive) capacitors are OK.
In the meantime I have new information. Following the remarks of Brent
Hilpert I sought to have more information on the backplane of my D116-E.
I
alf of
"cctalk@classiccmp.org"
Reply-To: Dominique Carlier , "cctalk@classiccmp.org"
Date: Wednesday, August 23, 2017 at 6:17 AM
To: "cctalk@classiccmp.org"
Subject: Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring and
restarting
Here is the sit
and see at which
>> amperage the voltage starts to degrade, and if it exceeds the design
>> criterion for the power supply.
>> Marc
>>
>> From: cctalk on behalf of
>> "cctalk@classiccmp.org"
>> Reply-To: Dominique Carlier , "cctalk@classiccmp.org&
I put the answers in your message
23/08/2017 20:22, Brent Hilpert via cctalk wrote:
Am I correct in inferring that this machine (the processor) has four +5V
regulators?: it appears there are 2 power supply chassis (rear photo), each
with 2 regulators,
or are those 2 chassis not identical and
On 2017-Aug-23, at 6:17 AM, Dominique Carlier via cctalk wrote:
> Here is the situation.
>
> The + 5V 12A that collapses comes out from pins 10-14 / 36-40, the other + 5V
> 12A (pins 15-22 / 36-40) never goes down.
>
> All that I surrounded in green on that image (1950×2361, zoomable) are the
>
Here is the situation.
The + 5V 12A that collapses comes out from pins 10-14 / 36-40, the other
+ 5V 12A (pins 15-22 / 36-40) never goes down.
All that I surrounded in green on that image (1950×2361, zoomable) are
the components that I tested on the power supply G2, A3 motherboard,
regulatio
On 2017-Aug-21, at 8:46 AM, Dominique Carlier via cctalk wrote:
>> As is typical for power supplies of this type and era, this power supply
>> includes current limiting circuitry.
>>
>> The current-limiting circuitry will throttle down the output voltage (not
>> shut it off completely) as the
Because I had removed every wires to test transistors on A1 and A2, and
since I have to buy 4 new 0.1ohm resistors and an equivalent of 2N6254,
in the meantime because they are identical I decided to interchange A1
and A2, I was hoping note a +5V collapsed on the other output but no, it
is alwa
Hello,
Yes, it is a "Fluke 73" maybe not enough accurate for that kind of
measurements ?
On 21/08/2017 18:53, Anders Nelson via cctalk wrote:
Hi Dominique,
Are you using a standard DMM to make your resistance measurements? If not,
you may have more consistent results by using a laboratory D
Hi Dominique,
Are you using a standard DMM to make your resistance measurements? If not,
you may have more consistent results by using a laboratory DMM that is
rated to measure milliohms.
On Mon, Aug 21, 2017 at 11:47 AM Dominique Carlier via cctalk <
cctalk@classiccmp.org> wrote:
>
> Thank you
Thank you very much for these valuable detailed information! :-)
Also following the suggestions of Curious Marc, I focus now on the
comparison between the two almost identical circuits that deliver the
regulated + 5V on G2.
Following your explanations, I started by checking the transistors a
On 2017-Aug-20, at 12:08 AM, Brent Hilpert via cctalk wrote:
> On 2017-Aug, at 12:10 PM, Dominique Carlier via cctalk wrote:
>>>
>>> Question: a faulty voltage regulator can behave in this way? I always
>>> thought it worked or it did not work, but not between the two states
>>> depending on the
On 2017-Aug-19, at 12:10 PM, Dominique Carlier via cctalk wrote:
> Maybe it's better to give us all the useful information these power supplies,
> moreover it might be useful to other people with the same computer.
>
> An overall bloc diagram of the D-116 power supply including G1 and G2.
> http:
On 08/19/2017 11:29 AM, Rod Smallwood via cctalk wrote:
> Leaky Crowbar SCR?
>
Never heard of such a thing. SCRs are usually all the way
on, or all the way off. Why would it be sensitive to load on
the power supply?
Jon
A straightforward linear supply. We should be able to get that puppy working.
Looks like you have two of the same thing on G2, two +5V supplies. You could
take advantage of that and compare voltages of one against the other at several
points. You coukd also monitor the voltage on the non regulat
Maybe it's better to give us all the useful information these power
supplies, moreover it might be useful to other people with the same
computer.
An overall bloc diagram of the D-116 power supply including G1 and G2.
http://www.zeltrax.com/classiccmp_forum/psu_overall_bloc_diagram.jpg
The comp
Leaky Crowbar SCR?
On 19/08/2017 17:06, Jon Elson via cctalk wrote:
On 08/19/2017 03:17 AM, Dominique Carlier via cctalk wrote:
Hello Marc,
In fact no, i am not really sure, I checked twice all the
big filtering caps but as you with a low voltage tester.
These caps comes apparently from a ne
On 08/19/2017 03:17 AM, Dominique Carlier via cctalk wrote:
> Hello Marc,
>
> In fact no, i am not really sure, I checked twice all the
> big filtering caps but as you with a low voltage tester.
> These caps comes apparently from a new old stock and some
> doubts persists now.
> I admit, I don't kn
iccmp.org] On Behalf Of Dominique
Carlier via cctalk
Sent: Saturday, 19 August 2017 6:17 PM
To: Curious Marc ; General Discussion: On-Topic and
Off-Topic Posts
Subject: Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring
and restarting
Hello Marc,
In fact no, i am not really sure, I c
ower supply for that regulated +5V,
and bypass the +5V regulated of G2, but it would be a shame and not in the
spirit of a restoration in my opinion.
Forwarded Message ----
Subject:Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring
and restarting
Date:Wed, 16 Aug
n in my opinion.
Forwarded Message
Subject: Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring
and restarting
Date:Wed, 16 Aug 2017 23:33:31 +0200
From:Dominique Carlier
To:Christian Kennedy via cctalk
Hi !
I finally find some time to work again on m
Dominique,
I agree with Rod’s suggestion to check the current, but one other
possibility is to check for small resistances, maybe considerably less than 1
Ohm, somewhere between the 5V regulation and the delivery of 5V to the logic
boards. If a connector has corroded or a solder joint
inion.
Forwarded Message
Subject: Re: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 -
Restoring and restarting
Date: Wed, 16 Aug 2017 23:33:31 +0200
From: Dominique Carlier
To: Christian Kennedy via cctalk
Hi !
I finally find some time to work again on
NERAL NOVA 2/10 / Nixdorf 620 -
Restoring and restarting
Date: Wed, 16 Aug 2017 23:33:31 +0200
From: Dominique Carlier
To: Christian Kennedy via cctalk
Hi !
I finally find some time to work again on my D-116, try to find the
problem(s), thus principally at the level of PSUs.
As you sugg
Hi !
I finally find some time to work again on my D-116, try to find the
problem(s), thus principally at the level of PSUs.
As you suggested, I inspected particularly the large capacitors of both
power supplies. I replaced those that appeared suspicious according to
the results via my ESR mete
Hi all,
Sorry for this long wait. Because of some family problems combined with
a big professional project I had to put this project on hold. However I
intend to continue this restoration with detailed photos and all the
continuation of the adventure with a lot of informations ;-)
Since my l
Hi,
I saw this ad but the shipping costs until Belgium decided me to react
as if I had not seen anything ^^
It's a pity, I would have taken a few boards.
On 18/05/2017 06:05, AJ Palmgren wrote:
My search for this was prompted by my seeing one on eBay:
http://www.ebay.com/itm/282462822861
On 4/1/2017 6:47 PM, Jay Jaeger via cctech wrote:
Typically not, since with no tape it should act like all the holes are punched,
yes?
with no tape, the Data Products servo ran open loop. You'd think what
you said was true, but IIRC, you didn't run them with no tape.
Later the 2230/60/90s
My search for this was prompted by my seeing one on eBay:
http://www.ebay.com/itm/282462822861
Did anyone here purchase it, or know who did? Just curious, since these
seem so rare and interesting.
Best,
-AJ
On Wed, May 17, 2017 at 8:29 PM, AJ Palmgren
wrote:
> Dominique,
>
> I'm quite intere
Dominique,
I'm quite interested in seeing your Entrex/Nixdorf system restored. Please
keep us updated here. Nice work saving these rare items!
I've done some of my own work restoring a DG Nova-type system. (
http://Point4iris.com ). I'd love to see if there's any way I could help.
I'll read
> On 4/4/2017 7:09 AM, Dominique Carlier via cctalk wrote:
>> Concerning the memory, I analyzed more in detail, I think finally that
>> all the memory is core type, 1 X 16KW (it is marked on it) and 2 X 8KW
>> (according to the size of the core package in comparison with the 16KW
>> board). Thus
On 4/4/2017 7:09 AM, Dominique Carlier via cctalk wrote:
Concerning the PSU I will analyze your suggestions.
Concerning the memory, I analyzed more in detail, I think finally that
all the memory is core type, 1 X 16KW (it is marked on it) and 2 X 8KW
(according to the size of the core pack
Many thanks for these detailed answers ! :)
Indeed, I finally do not know exactly what Nova my DCC is the clone.
Another specialist suggested that it was rather a clone of NOVA 1200?
Note that in Nixdorf contracts for the 600 series, these machines were
sometimes updated with a new CPU over
On 4/1/17 12:33 PM, Dominique Carlier via cctalk wrote:
[snip]
> Anyway, the Nixdorf 620 is actually built by "Digital Computer Controls"
> and after some researches it seems that it is a "DCC-116 E", the 17 slot
> version of the "DCC-116" which Is a clone of the "Data General Nova 2/10".
Er.
After the mess, ...
http://actingmachines.com/classiccmp_forum/mess01.jpg
... it was time to reorganize a cool place to continue this restoration :-)
http://actingmachines.com/classiccmp_forum/calm01.jpg
http://actingmachines.com/classiccmp_forum/calm02.jpg
Without the schematics of the two p
Typically not, since with no tape it should act like all the holes are punched,
yes?
Sent from my iPad
> On Apr 1, 2017, at 18:04, Chuck Guzis via cctech
> wrote:
>
>> On 04/01/2017 01:45 PM, Al Kossow via cctalk wrote:
>>
>>
>>> On 4/1/17 12:33 PM, Dominique Carlier via cctalk wrote:
>>> s
I do not have anything useful to say, but I liked your pictures and video.
Congratulations on a successful first boot!
--
Mark J. Blair, NF6X
http://www.nf6x.net/
On 04/01/2017 01:45 PM, Al Kossow via cctalk wrote:
>
>
> On 4/1/17 12:33 PM, Dominique Carlier via cctalk wrote:
>> strange machine, there is a tape reader inside the printer.
>
> it is used to program vertical forms postioning. the format tape is
> in a loop
...and whatever you do, don't los
On 4/1/17 12:33 PM, Dominique Carlier via cctalk wrote:
> strange machine, there is a tape reader inside the printer.
it is used to program vertical forms postioning. the format tape is in a loop
Hi guys !
My name is Dominique, 43 , from Belgium (I apologize in advance for my
approximate English). I join this forum under the recommendations of
Curious Marc. It seems there are people here who can help me to get back
to life the venerable machine that I have just recovered.
Some pictur
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