Hi everybody, I have some questions about the replacement for some tantalum and electrolytic capacitors. In our museum, there are two monitors HP98786A with a faulty power supply. The power supply has

Sunday afternoon I prepared to compile a program on my HP 150A/B when it suddenly froze. The system had been run a few hours ago in DOS and Windows 1 without problems. When I restarted the system agai

After mulling over all of the suggestions about removing the defective DRAM chips from the 64K memory card, I decided to remove them by using a special DIP nozzle on my hot air gun. I applied flux to

Me Bad Posted to wrong group. I have deleted the message. Dave VE7HR

Can somebody point me to a download of the SS/80 Exerciser software that will run on the 9816. Only download I found was the CS/80 exerciser for the 300 series. Manuel

The following files and folders have been uploaded to the Files area of the VintHPcom@groups.io group. /HP 9000 Series 200 300/Hardware related/HP 9836 Repair Notes.pdf By: Martin Hepperle <Martin.Hep

As you probably know from my other posts, I have a 9835A memory card with at least six MB8116N 16Kbit DRAM chips that are getting hot. I have replacement chips on the way and need advice on the best w

As I was swapping assemblies between my working 9835B and my non-working 9835A for troubleshooting purposes, something (or more specifically, the lack of something) caught my eye on the I/O board unde

I'm still in the midst of figuring out why my 9835A doesn't boot up properly. This weekend I plan to use my working 9835B to swap boards for testing. In the meantime, I purchased an additional 09835-6

Hi, recently I've acquired HP 9000/220, only the main unit. I grabbed an old, green monitor with RCA and the output is a mess, perhaps like some problems with horizontal sync? I tried also Commodore 1

Not me, but I've bought from the vendor before and think he's on one of the testgear groups. https://twitter.com/robert_watson/status/1540629675671683072

Hey, does anyone have a copy of BASIC/UX for series 700 machines, the PA-RISC systems? I think it's E2045C. -Dave -- Dave McGuire, AK4HZ New Kensington, PA

The following files and folders have been uploaded to the Files area of the VintHPcom@groups.io group. /Drive info/HP 9825 DC100/9825MagneticTapeFormatDC100.pdf By: Dyke Shaffer <dykeshaffer@...> Desc

Dyke Shaffer <dykeshaffer@...> added folder /Drive info/HP 9825 DC100

For those who want to recreate replacements for broken handles for the monitor locking mechanism of HP 9836 machines: I have created a 3D printable version and uploaded the STL file to my repository a

I'm working on a Sony floppy drive which had the usual sticky mechanics. Got all of that fixed w/o issue but have a problem w/this one that I cannot figure out. Insert the disc and the head moves into

Not directly related to HP, but I am looking for an IMSAI 8080 to complete my WarGames show setup. Possibly anyone has a hint where to find one of those. Just tried on eBay, but again the vendor didn'

Hi all, I bought a HP Draftmaster I. (HP 7595A) plotter to plot directly from my measurements. It is good condition, but two small parts missing and not loading the pen. The pen capping mechanism lost

Hey All, Thought I might ask here seeing that there was a topic on the 7090A already - I have one of these that works but it seems to occasionally not grab the pen from the carousel - I looked in the

Good evening, all, Does anyone offer a set of RIFA caps for the 9816 power supply? I have problems getting my unit to power up properly most of the time so I decided to inspect the power supply intern