On 2022/05/14 10:11 a.m., Rob Jarratt via cctalk wrote:
Hello,
I have found a bad DEC 7474 chip on my M7133 board. Clearly it is a
7474 D flip flop. The problem is I don't know which modern series
would be the best one to replace it with. I am sure I have seen a list
somewhere of modern
There ain’t no such thing as a free lunch!
What did you think would happen with large free email hosts? They round up all
the clients and then do what they like with them.
Google mines emails for data.
I use a private (paid) service via my web site host. I’ve been using it since
around 1996.
On 2022/07/13 3:00 p.m., Dennis Boone via cctalk wrote:
Folks,
I've belatedly realized that it's going to be a bit of a headache to
implement the old cctalk/cctech crossposting duality under the new
version of mailman.
I seem to recall a discussion about retiring the cctech list and just
I've been hunting for a few years for these switches and was thinking
that perhaps folks here may have seen them or even have some they wish
to part with...I've hit all the surplus sites, and poured over old
copies of old Radio Master Parts Catalogue/Encyclopedias - have 7 of
those, from 1971
Link to image of switch:
https://www.flippers.com/images/Misc/OAK_Pushbutton_Switch-1973.jpg
Thanks,
John :-#)#
On 2022/04/29 2:14 p.m., John Robertson via cctalk wrote:
I've been hunting for a few years for these switches and was thinking
that perhaps folks here may have seen them or even
On 2022/04/30 4:28 p.m., dwight via cctalk wrote:
Yep. I didn't know it was now made by someone else. Also look at McMaster-Carr.
You might get a better price.
Dwight
I've used Dow Corning #4 electrical grease for a couple of decades. It
really helps preventing corrosion and reduces heating
On 2022/05/05 10:26 a.m., Toby Thain via cctalk wrote:
On 2022-05-05 1:03 p.m., John Herron via cctalk wrote:
Someone at work pointed this out and I've never really thought about
it. Is
anyone here aware of the decision or reason to use a different 1
character
for the last 1 vs the first 1?
Ben, I buy lots of stuff from eBay US sellers and most are willing to check/fix
shipping costs.
If not then I use a drop-box service where the item is shipped to Oregon, and
then reshipped to me for a not too horrible cost.
Lastly, I’ll be back at my shop in Burnaby in a couple of days and
On 2022/09/19 9:51 p.m., ben via cctalk wrote:
On 2022-09-19 10:18 p.m., Tom Hunter via cctalk wrote:
There are a few US based Ebay sellers of the 74L85.
Tom
But most ebay sellers, from the USA seem to sell a item for $6.00 and
$75 shipping to Canada. China $2 and $3 shipping. With Covid all
On 2022/11/27 1:21 a.m., Rob Jarratt via cctalk wrote:
I have done a little more probing around. I have found that the 7812 regulator
that drives Vstart on sheet 1 of Tony Duell’s schematic is shorted, so I will
have to replace this too. I have not found anything else that looks obviously
On 2022/11/06 8:37 p.m., John H. Reinhardt via cctalk wrote:
So, I screwed up and in my excitement to find a DEC BA123 chassis (and
MVII parts) I bid on an Ebay auction where there is no shipping and
it's "Local Pickup Only". The problem is that I'm near Fort Worth TX
and the MVII/BA123 is in
Anyone interested in 3 tapes - has Olympics logo - still in original
wrapping? Ether pick up at my shop or pay for postage and handling...
John :-#)#
--
John's Jukes Ltd.
7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
Call (604)872-5757 (Pinballs, Jukes, Video Games)
On 2023/04/17 9:12 a.m., Sellam Abraham via cctalk wrote:
My initial reaction is that $2,000 seems a "bit" optimistic.
That being said, I'm surprised to see (on eBay's Terapeak) a couple of
these sold within the past year for around $1,100.
Sellam
One sold on eBay for $2492USD...Apr 6, 2023:
I've checked bitsavers.org (Al does a great job!), and a number of
forums, but no luck finding schematics for my ADM31 that I am trying to
resurrect. The power supply has issues and I need to identify a blown
out resistor - the switching supply is a Boschert model 1001 date code
7943 Revision
ly:*
http://www.bitsavers.org/pdf/boschert/Boschert_OL25_Single-Stage_Power_Supply_Maintenance_Manual_May79.pdf
and it was buried on bitsavers - where I went before bothering the list!
Thanks folks!
John :-#)#
On Tue, Apr 18, 2023 at 12:20 AM John Robertson via cctalk <
cctalk@classiccmp.org&g
On 2023/04/23 3:16 p.m., Glen Slick via cctalk wrote:
On Sun, Apr 23, 2023 at 3:10 PM John Robertson via cctalk
wrote:
Oh, I am missing two key caps for the ADM31, anyone have spares? Not
sure what is printed on them at this point, but any caps would be better
than missing ones to start
On 2023/04/18 8:48 p.m., Tony Duell via cctalk wrote:
On Wed, Apr 19, 2023 at 2:37 AM Tom Hunter via cctalk
wrote:
... or four $20 power transistors to protect a 10 cent fuse like on the DEC
VR-14 display.
In general the transistor(s) will fail short-circuit, thus taking out
the fuse too.
On 2023/04/23 10:00 a.m., Paul Koning via cctalk wrote:
On Apr 23, 2023, at 12:54 PM, Fritz Mueller via cctalk
wrote:
Hi folks,
I’ve been picking my way through a PDP-8/L restoration lately. I’ve found that
everything in the machine is covered with a uniform layer of dark “soot”
(enough
On 2023/03/27 2:10 p.m., Mark Linimon via cctalk wrote:
On 03/27/2023 5:38 PM GMT rescue via cctalk wrote:
have a number of 2764, 27256, have some 27128 I think too
Myself as well, probably down to 1702s. Right now with some current money
trouble they are looking like assets :-/
mcl
I'm
On 2023/05/25 5:11 p.m., Sellam Abraham via cctalk wrote:
Tom,
You may save yourself some time with this nifty contraption ==>
https://www.ebay.com/itm/303620862566
It's a floppy disk cleaning apparatus. You place the floppy disk into the
frame, apply your cleaning solution and cloth to the
I sold my Lear Siegler ADM31 recently and the new owner (Ian) has found
that one of the ROMs failed before he could archive it - or it was
defective to start with.
So my question to the list is - does anyone have the ROM codes (there
are three of them) archived?
I don't think Ian is a
Hi Peter,
Thanks, I'll check with Ian if he tried those or not...
John :-#)#
On 2023/08/03 11:58 a.m., Peter Ekstrom wrote:
Hi John,
Would these be what you are looking for?
https://bitsavers.org/pdf/learSiegler/ADM_31/firmware/
-Peter
On Thu, Aug 3, 2023 at 2:47 PM John Robertson via
On 2023/07/01 1:10 p.m., Sellam Abraham via cctalk wrote:
Don Lancaster passed away on June 7.
https://gilaherald.com/obituary-for-don-lancaster/
I hope his website is well preserved:
https://tinaja.com/
Sellam
web.archive.org has many copies archived:
On 2024/01/10 10:56 a.m., Dennis Boone via cctalk wrote:
> According to a warning on the site: "After many years of service,
> hobbes.nmsu.edu will be decommissioned and will no longer be
> available. You the user are responsible for downloading any of the
> files found in this archive
On 2023/12/19 4:26 a.m., Tom Hunter via cctalk wrote:
I just realised that I never followed up on this.
After some research and a few phone calls to manufacturer support lines I
settled on SikaBond SprayFix as the glue.
...
The front panel has now been re-assembled and is fully functional and
On 2024/01/25 6:28 a.m., Paul Koning wrote:
On Jan 24, 2024, at 3:52 PM, John Robertson via cctalk
wrote:
I've been hunting for a while now for OAK PCB mount keyboard switches that I
can't find a part number for. I've attached a product listing for the switch
that shows it pretty well
On 2024/01/29 12:45 p.m., William Sudbrink via cctalk wrote:
Sellam Abraham wrote:
I think you were fine. That's how you discharge them anyway. You were just
missing the grounding wire :)
Yes, I have one set up for just that purpose. Wire clamped to the shaft with
an alligator at the
On 2024/01/24 12:52 p.m., John Robertson via cctalk wrote:
I've been hunting for a while now for OAK PCB mount keyboard switches
that I can't find a part number for. I've attached a product listing
for the switch that shows it pretty well. DPST-NO preferred.
Only $0.40 in the early '70s!
Any
I've been hunting for a while now for OAK PCB mount keyboard switches
that I can't find a part number for. I've attached a product listing for
the switch that shows it pretty well. DPST-NO preferred.
Only $0.40 in the early '70s!
Any quantity considered...
Thanks!
John :-#)#
--
Location?
On 2023/11/16 2:24 a.m., Dave Wade G4UGM via cctalk wrote:
Folks,
Trying to reduce the weight in my loft and I would like to donate my HP
Photoplotter to a good home.
. Photos of the plotter and some sample plots are on my OneDrive here:-
On 2024/03/30 7:53 p.m., Glen Slick via cctalk wrote:
On Sat, Mar 30, 2024 at 5:11 PM Jonathan Chapman via cctalk
wrote:
Standard TTL 74XXX is drying up rather quickly. Futurlec still has some
TTL but 7404s are all gone. Even LS is hard to find.
Ours comes from Mouser, between two part #s
On 2024/04/30 10:08 a.m., Anders Nelson via cctalk wrote:
Having grown up with 1.44MB 3.5" floppies, I have a question: is it
possible to use a 1.44MB disk and just format it as a 720K disk?
=]
--
Anders Nelson
www.andersknelson.com
As I recall you had to bulk erase the old diskette and then
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