[cctalk] HP Computer Museum update

Those who have an interest in vintage HP computing will most likely know of the HP Computer Museum (www.hpmuseum.net). The HP Computer Museum is the result of over 30 years of work by Jon Johnston who collected HP equipment and documentation and systematically catalogued, photographed and

Re: Melted computer feet

I’ve used Orange based cleaners a lot in restoring old HP equipment. It does affect some plastics -polystyrene in particular- but it’s not as harsh as Goo Gone and should be wiped off quickly anyway. It does not affect most other plastics in my experience. David Sent from my iPad > On 20

Re: Melted computer feet

Goo Gone is one option but may harm the plastic case. Orange based cleaners are also good - the ones that remove stickers etc Sent from my iPad > On 20 May 2021, at 10:50 am, Zane Healy via cctalk > wrote: > > Is there any recommended method for cleaning up melted “rubber” feet on a >

RE: name/model of HP portable printer? (not HP 2225x) circa 1993

How about this... http://www.hpmuseum.net/display_item.php?hw=311 David Collins www.hpmuseum.net -Original Message- From: cctalk On Behalf Of Stan Sieler via cctalk Sent: Friday, 12 March 2021 6:22 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: name/model of HP

RE: One more thing to fix... HP9000/380 power supply

Carlos, from my experience in fixing a number of switch mode supplies in HP gear, if the supply is dead but you have full voltage across the big filter caps (~340v DC), it's typically a problem with the power supply to the regulator that drives the primary switching transistor. That 'power

RE: Wanted, Papertape Reader for Archiving Tapes

I've pulled together details of the controller used with an HP2748 paper tape reader to dump a bunch of tapes from the HP Computer Museum's collection with the help of J. David Bryan. The details are at this link.. https://drive.google.com/open?id=1KaJkVgYzPusJN9tLf4IaSIa104fvLhUs The unit

Re: Wanted, Papertape Reader for Archiving Tapes

Further to Dave’s post below, I’m happy to share the Arduino code and schematic if anyone has a suitable reader and wants to try it. It was indeed designed to interface to the HP2748 but is pretty simple and could be adapted to any similar reader. David Collins Sent from my iPad > On 29 Apr

RE: Info / packs for Amcodyne 7110 "Arapahoe" drive?

I have one or two packs and a drive in the museum but that's all. If I had a surplus of packs I'd be happy to share... David Collins -Original Message- From: cctalk On Behalf Of Al Kossow via cctalk Sent: Saturday, 11 January 2020 9:02 AM To: General Discussion: On-Topic and Off-Topic

Re: HP3000/917LX available in Vacaville

Thanks! On Mon, 30 Sep 2019 at 08:15, Frank McConnell wrote: > On Sep 29, 2019, at 7:48, David Collins wrote: > > “3000-L” ? Is that another group? > > Different from this one. hp300...@raven.utc.edu, emphasis on the > “3000-L” part. > > LISTSERV Web page with desciption and archives at < >

Re: HP3000/917LX available in Vacaville

“3000-L” ? Is that another group? > On 29 Sep 2019, at 9:27 am, Stan Sieler via cctalk > wrote: > > Lee writes: > >> This is a *very* nice entry-level HP3000/MPE system based on PA-RISC >> architecture. But one note - the 917 had the soldered TOD battery on the >> motherboard, vs. the FRU

Re: Decaying foam on PCBs

In Australia there’s this product ; https://awareenvironmental.com.au/product/sticky-spot-goo-dissolver/ It’s citrus based but I haven’t had any bad effects on PCBs. It does affect some styrene plastics but in general it’s safe and very effective. If you aren’t in Aus, a similar citrus based

Re: Scanning Results

While Al is working through his backlog, the HP Computer Museum would be happy to put them up in the appropriate device webpages. They would be a great addition to a site that focuses on vintage HP computing equipment! On Mon, 22 Jul 2019 at 17:23, Christian Corti via cctalk <

RE: MPE release history (was: Re: VMS versions)

The HP Computer Museum website now has a link to the version history file referenced below. http://www.hpmuseum.net/exhibit.php?content=3000-MPE%20(Software) Happy to update it if there is more info or corrections. David Collins -Original Message- From: cctalk On Behalf Of Frank

Re: Not DEC related but still hoping for some help: Problems w/ LJ 4+ Printer

You could well have a temp sensitive HV supply or excess moisture in it that keeps the HT low until the warmth of operation dries it out. Given the problem returns each time, a temp sensitive HV sounds likely. Not sure how quickly you could remove and replace the supply but you might trying

Re: Q: Plotter bed repair with MonoKote?

Also very interested in the use of Monokote to repair plotter beds...any more info/experience/tips/traps would be much appreciated. David Collins HP Computer Museum > On 19 Feb 2019, at 5:37 am, Craig Ruff via cctech > wrote: > > >> On Feb 18, 2019, at 11:00 AM, dwight wrote: >> >> There

RE: sun 88780 on ebay

: sun 88780 on ebay On 1/28/19 8:08 PM, David Collins via cctalk wrote: > I just restored a 7980XC (HP commercial version of the 88780) and it all > worked after I reinitialised the gains in each channel. David, do you know of anyone that has the schematics for these drives? MANY yea

Re: sun 88780 on ebay

I was the mass storage region specialist for HP Australia when these came out. They were pretty reliable and compared to the previous 7970 and 7974 drives that had start/stop capstans, they were pretty good on tapes. I just restored a 7980XC (HP commercial version of the 88780) and it all

Re: HP HP HP !! PING THE CURATOR AT HPMUSEUM IN OZ ED SHARPE TRYING TO REACH U MAKESURE AOL GOES THRU

Hi Ed... I’m actually in London right now but going back to Melbourne on Monday morning. Internet connection very bad where I am staying so haven’t had a chance to check on what I have but if it’s on the list and you have it scanned please send and I’ll put it up on the site. Thanks (and I

Re: Identifying TO-3 w/HP house numbering

The 9816 uses a BUZ45 - might be the same as the 2382? David Collins +61 424 785 131 > On 16 Oct 2018, at 3:24 pm, Curious Marc via cctech > wrote: > > Forgot to mention, I have a 2382A that works (affectionately known as the > "Munchkin" terminal). I could measure some stuff in mine for

RE: Troubleshooting HP 2116B

Christian, I tried to track down details of the 1820-0183 and the manuals appear to say it's an RCA item, part number 80170 but I cant find anything with that number anywhere - you are probably on the right track with a CA3082A or similar. My experience in fixing similar faults on the memory

RE: HP-2116 front panel lamps

Christian, when I was restoring the HP Computer Museum's 2116A I ordered a bunch of these 345 bulbs from 1000bulbs.com - but it seems they no longer stock them. I did find this listing though which looks current... https://www.lighting-pros.com/eiko-345-t-1-3-4-midget-flanged-sx6s-case-of-1 0

Re: And  if   you  collect hp.  which...   we  do  of  course at  SMECC  so need to hear  if  you  qall have any of  this.

I have a 3000 Series 70... but it’s in Australia! David Collins +61 424 785 131 > On 24 Jul 2018, at 11:32 am, Ed Sharpe via cctalk > wrote: > > > And if you collect hp. which... we do of course at SMECC so need > to hear if you all have any of this. > > > > The scanjet

Re: HP Series 9000 early 1980’s computer hardware

I agree with Al. Chas approached the HP Computer Museum on this and as much as they would be great to add to the collection, the shipping costs to Australia and the fact that the museum is more in a consolidation mode than acquisition meant we weren’t able to take them in. Hopefully someone

Re: micro pdp11/83 power supply

Check the mains filter x2 capacitor. Sent from my iPad > On 13 May 2018, at 3:51 pm, Waldemar Brodkorb via cctech > wrote: > > Hi, > > I started to revive an old Micro PDP11/83 I have for over 12 years > now. It is fully assembled and last time I tried to start the >

Re: Apollo Software

The HP Computer Museum would be happy to host copies of any Apollo software if it can be imaged.. David Collins Sent from my iPad > On 22 Jan 2018, at 4:50 am, Josh Dersch via cctalk > wrote: > >> On 1/21/2018 7:22 AM, Bill Gunshannon via cctalk wrote: >> Is there any

Re: Help Identifying Components

If you could wait, getting one of those ‘unknown component testers’ would help you! David Collins > On 25 Dec 2017, at 5:27 am, Rob Jarratt via cctalk > wrote: > > I am continuing work to reverse engineer the schematic for my H7826 PSU. I > have removed one of the

Re: Playing with HP2640B

Christian do you know the gauge of the wire you used ? And the current? Maybe I should try that approach again! David Collins > On 17 Nov 2017, at 8:09 pm, Christian Corti via cctalk > wrote: > >> On Thu, 16 Nov 2017, CuriousMarc wrote: >> What did you do for the

Re: Playing with HP2640B

Marc, in addition to Mattis’ forthcoming reply, my recent experience with a moldy 2624A was that the hot wire method was very poor. Too hard to get the wire in, didn’t melt the ‘glue’ very well, smelly. Gave up when the wire broke. What worked best for me was a flat blade screwdriver that was

Re: HP 2640 character set generation manual in the UK

I’ll put it on www.hpmuseum.net as well so we have at least 2 sources...thanks for doing this! David Collins Sent from my iPad > On 10 Nov 2017, at 1:29 am, Christian Corti via cctalk > wrote: > > The manual has been scanned and is on our FTP server: >

Re: HP 9836U processor mystery...

The hpmuseum.net is indeed having technical issues at the moment. The after effects of an Opsys upgrade to the web server it seems. Service will be restored as soon as possible! David Collins > On 7 Nov 2017, at 3:52 pm, Josh Dersch via cctalk > wrote: > > Hi all --

Re: RL02 Spinup fails

I’m more used to working on HP drives of this type but it sounds to me like you are getting a seek Time Out. It sounds like the motor spins up to speed and the head load is being initiated. there should be a carriage unlock (I assume there’s a lock solenoid) and the carriage should start to

Re: HP 2640 character set generation manual in the UK

Already checked, not one we have unfortunately. If one turns up we’ll be happy to put it up on the website though! David Collins HP Computer Museum Sent from my iPad > On 4 Nov 2017, at 7:17 am, Ed via cctalk wrote: > > no the other hp museum! > across the pond!

Re: Tubbs fire consumed the collected archives of William Hewlett and David Packard

Completely agree. I’m in the process of scanning additional product manuals that haven’t made it into the HP Computer Museum’s site yet. Any of us with websites could have some reason to stop doing this good work at any time so duplicated info across a few sites is an important risk reduction

Re: HP 7970 1/2" 9-Track Reel-to-Reel Tape Drive...

Pretty expensive to ship one from Australia I guess... David Collins > On 18 Oct 2017, at 6:34 am, Jack Harper via cctalk > wrote: > > > Greetings to the List - > > Does anyone know of a HP 7970 (any model) tape drive that might be > available > > Any leads

Re: HPGL plotter art files

Brent could you send it to cura...@hpmuseum.net as well? Thanks! David Collins > On 16 Oct 2017, at 2:32 pm, Brent Hilpert via cctalk > wrote: > >> On 2017-Oct-15, at 4:20 PM, Mike Stein via cctalk wrote: >> Can anybody direct me to some interesting HPGL plotter files

RE: HP-UX 5.1 for the 9836U?

If someone ends up finding it, I'd be happy to host it on the HP Computer Museum website. David Collins -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Rik Bos via cctalk Sent: Sunday, 15 October 2017 7:30 PM To: Curious Marc

Re: (Classic Computers) HP 7970 1/2" 9-Track Reel-to-Reel Tape Drive

Jay, if you have any scanned HP manuals that you don’t think are on line, I’d be happy to post them up on the HP Computer Museum site, giving credit where it’s due of course! David Collins > On 5 Oct 2017, at 8:10 am, Chuck Guzis via cctalk > wrote: > >> On

Re: (Classic Computers) HP 7970 1/2" 9-Track Reel-to-Reel Tape Drive

Al, while I can’t rescan the thousands of documents already in the HP Computer Museum’s website and leave off the Australia stamp, I can assure you any future documents will be scanned as originally printed. I am in the process of sifting through many pallets of old duplicate HP manuals that

RE: Looking for firmware of HP82937 & HP82939

If no-one else has, I should be able to... David Collins HP Computer Museum -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of F.Ulivi via cctalk Sent: Friday, 22 September 2017 10:35 PM To: cctalk@classiccmp.org Subject: Looking for firmware of HP82937

Re: HP 7970B Capstan?

From my old HP CE days you could always get black off the capstan if you used alcohol or similar (never recommended). The key thing is it shouldn't be sticky/gooey. The official cleaning solution when they were in active use was water and a low lint cloth. David Collins (Sent from out of

RE: DCC-116 E / DATA GENERAL NOVA 2/10 / Nixdorf 620 - Restoring and restarting

An easy way to check the caps is to see what the voltage across them is like when you put the system under load and the 'regulated' voltage drops. If the cap voltage drops substantially, or if you get a high ripple under load, that's a good sign the caps are bad. You mention that the +5V holds

Re: VCF?

Its going well. Alto presentation about to start.. David Collins HP Computer Museum Sent from my iPad > On 6 Aug 2017, at 11:26 am, Fred Cisin via cctalk > wrote: > > How is VCF going? > > > I was going to take a dozen boxes of books, a couple of computers, and some

RE: HP 12653A line printer interface

Unfortunately, there are none of the big impact printers in the collection. In my days as an HP Customer Engineer I worked on the 2613 and 2617 drum printers and the 2611 and 2619 chain printers. I don’t recall ever working on a 2618. Those drums and chains would be covered in caked on ink

Re: HP 12653A line printer interface

I do indeed have the printer. Found it on the weekend. No sign of the interface card or cable yet though. David Collins (Sent from out of office) > On 14 Jul 2017, at 6:02 pm, CuriousMarc via cctalk > wrote: > > Ah, thanks, I learned something. The HP 2767 is a weird

RE: HP 12653A line printer interface

I've looked for this card in the HP Computer Museum collection - no luck so far. -Original Message- From: cctech [mailto:cctech-boun...@classiccmp.org] On Behalf Of J. David Bryan via cctech Sent: Wednesday, 12 July 2017 4:12 AM To: CuriousMarc Cc: Classic

Re: HP9816 keyboard plunger wanted.

Mattis, the problem you have is very common on these and HP85 keyboards and is usually caused by one side of the square plunger cracking in a corner and bowing out. It's normally fixed by gently bending the affected side towards the centre of the square. A little bit of heat from a hair dryer

RE: HP 9836 systems and Fuji Pictrography 4000 printer available

: Sunday, 28 May 2017 11:20 AM To: David Collins via cctalk <cctalk@classiccmp.org> Subject: Re: HP 9836 systems and Fuji Pictrography 4000 printer available David, Do you know if the key switches used in these keyboards are the same as the one in the Nimitz keyboard?I have a two sw

Re: interesting... hp-9000 in the news! - russian-hackers-used-backdoor-two-decades

Try opening the following link in Chrome (not IE). https://www.wired.com/wp-content/uploads/2017/04/DSC_0794.jpg That opened the full image for me. David Collins On 4 Apr 2017, at 2:47 pm, Cameron Kaiser via cctalk wrote: >> It's an HP9000 E55. The HP Computer

Re: interesting... hp-9000 in the news! - russian-hackers-used-backdoor-two-decades

I clicked on the image in the report and it opened up a high def file which I could zoom in on. For some reason it won't do it now but I snipped the HP 9000 E55 badge image as a record. Not sure how to post it here. The terminal badge says it's a 700/96 terminal. It wasn't a guess! David

Re: interesting... hp-9000 in the news! - russian-hackers-used-backdoor-two-decades

It's an HP9000 E55. The HP Computer Museum even has one in our collection! David Collins Curator www.hpmusuem.net David Collins Client Engagement Manager Dimension Data Tel: +61 3 9626 0593 Mob: +61 424 785 131 e-mail: david.coll...@dimensiondata.com (Sent from out of office) On 4 Apr 2017,