Purchased an Osborne MPV1024 monitor and it just works
Purchased an Osborne MPV1024 monitor and it just works
Last week I made a post asking if I should buy an old vintage monitor.
Well, I went back to the recycled goods store this week and it was still there, so $30 later I have it, and it seems to just work*
There's very little about this monitor on the internet, so I'm thinking of documenting as much as I can about it, especially as it's Osborne branded so there could be some interesting history behind it.
* The power button is stuck on, and it does an occasional unsettling arc sound and the image slightly distorts for a millisecond. I believe the latter is fairly common among old CRTs but I don't know much more than that.
Do you know much about crt maintenance? If so get on it!
If not: it seems like it’s in good shape but based on your description of the arcing sound and image distortion you may have high voltage leakage.
Before investigating the fix for that start with basics: clean the inside of the case. Open it up, don’t touch anything dangerous yet (turn it off and disconnect power though, obviously). Blast out everything with compressed air. Dust build up, insect nests, etc can wreak havoc but I don’t think this is the issue. I bet it’s the anode cap
Pretty easy fix: clean the anode cap. Power it down, let it sit for a bit, look up how to discharge the tube (you basically bridge the anode to ground with something like a screwdriver. This is dangerous though bc very high voltage so watch a video to see what to actually do and use an insulated screwdriver, obviously)
Once the anode cap is off clean it and the area around it with isopropyl. If the anode cap is damaged that poses a bigger challenge, you can sometimes source a replacement still or bodge repair them if not
If it’s not the anode cap next check is flyback. This is easy to diagnose generally. Just look at it: does it have cracks, does it smell, burn marks, can you wiggle it/is it loose (power disconnected obviously) then that’s probably got some issues. Sourcing a replacement can be a pain
Finally check grounding straps. Less likely but could be a factor
If none of that works it’s probably arcing inside the tube. Sorry if that’s the case and enjoy it while it lasts, nothing lasts forever. This is probably not the case, maybe
The click and distortion is the auto degaussing. Probably happens because the power button is stuck down. You used to push and hold on some models to degauss.
Bruh this would have been the most bad-ass website on the internet in 1998.
The closest thing we had at the time was Craigslist missed connection.
We made do.
We had IRC and AIM but it just wasn’t the same.
We searched yahoo and lycos. We asked Jeeves. We had it all.
Until I get a nice computer to pair with it (that is, not my Linux server), this just felt right to do with it
my win11 (a necessity, not a choice) box at the office drives a 17in trinitron crt running at 1600x1200
Needs to be 3.11 skifree
My grandpa had a monitor like this - it came with a Osborne computer he bought in the mid 1990s. It was either a 486 or Pentium 1 (can't remember) and came with an Osborne-customized version of Windows 3.1 along with some floppy disks and CDs with Osborne software on them.
He was still using that same computer, with the same OS, until he moved into a retirement home in the late 2010s. He only really used it for writing stuff in some old version of Word, and playing Italian card games (Scopa, Briscola, etc).
I'm not sure what happened to the computer since it was all gone the last time I visited his house after he passed away. I live in the USA but he was in Australia so it was hard for me to try and keep on top of things like that.
I imagine a lot of these went that way unfortunately, including this one. They were difficult to use on Windows 95 onwards as far as I've found due to the SVGA resolution being interlaced, making them more tempting to toss once the Osborne PC became obsolete.
It's quite amazing he continued using it up to the 2010s, but I suppose when you have a completely offline system that already meets your needs, then it can't really go obsolete.
It's quite amazing he continued using it up to the 2010s
Yeah I'm surprised it lasted that long. He never used the internet or mobile phones and the Windows 3.1 PC was probably the only piece of modern-ish technology he used.
It's just SVGA; why wouldn't it "just work?" It doesn't appear to be weird or special in any particular way.
(Edit: other than being 240V/50Hz, which isn't normal where I am but presumably is normal in OP's country.)
Welllllllll.... A couple points to mention are that it is SVGA but interlaced, so I'm doing a bit of messing with xrandr to get that working but otherwise it is happy doing 800x600 progressive
I also meant that I didn't need to do any work to it - it has a couple minor issues as mentioned but didn't have any major components that have failed (like the flyback for instance)
Also yes I'm based in Australia so 240v is standard here
The power button is stuck on, and it does an occasional unsettling arc sound and the image slightly distorts for a millisecond. I believe the latter is fairly common among old CRTs but I don't know much more than that.
Sounds like a degauss!
It's relatively common for CRT screens degauss as they turn on, so it makes some sense that it's still happening, even if the power button otherwise doesn't work - the degauss must be triggered by a different internal mechanism than the one controlling the power
This monitor has no OSD or button to trigger a degauss. The coil will be wired directly to AC via a posistor, so it's entirely passive and will only trigger again when the monitor cools down.
The distortion is caused by the high voltage arcing over, which droops and interrupts beam deflection for a moment. I wouldn't want to run it this way for very long, because it can damage the flyback transformer over time (although the flyback could itself be arcing anyway).
Thanks for the heads up - it'll stay as a very occasional use monitor until I either feel comfortable enough to look inside (after lots of research, given the voltages within) or find a friend experienced in CRTs. I really wouldn't want to blow it up when it could've been prevented easily by maintaining it.
Butwhy.gif
The ultimate plan is to have a full retro setup, and I will piece it together as I come across more components that I think will fit.
The dream would be a PC from about 2000, running Win2k but dual booted with something old like Win3.11 and/or DOS, and period accurate (but still comfortable) peripherals, so keyboard, mouse, and speakers.