View Profile: compaqportableplus - Vintage Computer Forum

March 1st, 2021, 04:02 PM

compaqportableplus replied to a thread Compaq Portable 1 adventures: testing and repairs in PCs and Clones

Congrats on the Portable! They are great systems. Sounds like yours is coming along nicely. Got any pics! I think the replacement foam pads will...

10 replies | 172 view(s)

March 1st, 2021, 01:24 AM

compaqportableplus replied to a thread IBM XT 130W PSU issue in PCs and Clones

Well, I tried the PSU with just the Miniscribe connected and nothing else, and it still behaves the same way. However, I tested the 12V rail and...

5 replies | 140 view(s)

February 27th, 2021, 11:16 PM

compaqportableplus replied to a thread '86 ibm xt in PCs and Clones

Sounds like a cool machine you had! Here is a pic of the machine in one piece running Windows 2.03 with 16 colors! I'm using my...

6 replies | 254 view(s)

February 27th, 2021, 01:34 PM

compaqportableplus replied to a thread Part of growing up? Becoming humble in personal computer use as the years go by in General Off Topic

I use 30-plus-year-old computers on a regular basis, so I definitely don’t care about having the latest and greatest! If computers were as...

13 replies | 210 view(s)

February 19th, 2021, 11:26 PM

compaqportableplus replied to a thread Tandy 1000 RL tone of death in Tandy/Radio Shack

That’s a tantalum capacitor, so it probably failed and went dead-shorted. Really common on old tantalums, I’ve had plenty explode on me.

15 replies | 381 view(s)

February 18th, 2021, 11:09 PM

compaqportableplus replied to a thread IBM XT 130W PSU issue in PCs and Clones

I actually haven’t tried having just the hard drive connected and nothing else, but that’s definitely worth a try! Super curious to see what the...

5 replies | 140 view(s)

February 18th, 2021, 10:25 AM

compaqportableplus replied to a thread IBM XT 130W PSU issue in PCs and Clones

I have not, but I will be doing that soon. The drives take probably like 30+ seconds to spin-down with this PSU, which is INSANE. It should less than...

5 replies | 140 view(s)

February 18th, 2021, 10:18 AM

compaqportableplus replied to a thread '86 ibm xt in PCs and Clones

Thanks for the replies! Didn’t realize this was such a common issue! I like the idea of drilling for a screw, perhaps I’ll try that.

6 replies | 254 view(s)

February 17th, 2021, 11:38 PM

compaqportableplus started a thread IBM XT 130W PSU issue in PCs and Clones

The original 130W PSU in my 1986 IBM XT has always an interesting "squeak" when it's turned off, which I'm guessing isn't normal, but it had never...

5 replies | 140 view(s)

February 17th, 2021, 11:15 PM

compaqportableplus started a thread '86 ibm xt in PCs and Clones

I'm finally getting around to building up my 1986 IBM XT how I want it. I've had the machine since late 2013 and have never done a whole lot with it....

6 replies | 254 view(s)

February 17th, 2021, 10:43 PM

compaqportableplus replied to a thread IBM XT build almost finished! in PCs and Clones

Here's a pic of the Xebec MFM controller I installed, along with one of it installed in the machine:

55 replies | 7532 view(s)

February 13th, 2021, 01:02 PM

compaqportableplus replied to a thread Seagate 5.25 "vaporware" drives ST206 and ST278 in PCs and Clones

That’s likely a totally different designed drive than the ST-251-style units (like the 296N), as it’s listed as having 1023 cylinders, which means...

14 replies | 343 view(s)

February 12th, 2021, 05:56 PM

compaqportableplus replied to a thread Seagate 5.25 "vaporware" drives ST206 and ST278 in PCs and Clones

Some interesting stuff here! This is right up my alley! :) I’ve got an old eBay pic of an ST-252 somewhere. Would you like me to try and find it?

14 replies | 343 view(s)

February 11th, 2021, 06:47 AM

compaqportableplus replied to a thread IBM XT build almost finished! in PCs and Clones

This machine just gets more original all the time, I now have an original IBM/Xebec MFM controller connected to the ST-412! It’s the controller that...

55 replies | 7532 view(s)

February 11th, 2021, 06:33 AM

compaqportableplus replied to a thread Seagate 5.25" MFM hard drive boards in Vintage Computer Items For Sale or Trade

Was there really a 5MB version of the ST-212 (ST-206)? A quick google search reveals nothing and I’ve never seen it mentioned anywhere before. Didn’t...

8 replies | 360 view(s)

February 9th, 2021, 06:13 PM

compaqportableplus replied to a thread Looking for very special portable pc with color monitor in Later PCs

I’m almost 100% positive the COMPAQ Portable’s internal CRT is NOT composite, considering it’s dual-mode and how good the color shading is. Also, the...

12 replies | 530 view(s)

February 8th, 2021, 11:56 PM

compaqportableplus replied to a thread Seeking Interleave information from configure mfm drive in Vintage Computer Software

Wow, that's awesome! Never knew about those. I'd love to have one to experiment with. :)

25 replies | 635 view(s)

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