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Repair complete! Cleaned up the traces with some isopropyl and vinegar, then patched the ground, clk, and data lines that had been severe. Tacking the wires on was a bit of a chore since the solder became hard to melt from the corrosion. Once I made sure the pad went from the port area to the...

Recently got me a Compaq Prolinea 4/50 as I liked the low profile look of the computers. Was able to talk the seller down due to obvious battery corrosion... and wow no kidding; the old Ni-Cad battery had eaten away parts of the PS/2 circuit, specifically for the keyboard. Amazingly other than...

Check the Dead Mac Scrolls as it is a good resource to start pinpointing problem areas. https://archive.org/details/mac_The_Dead_Mac_Scrolls_1992 Page 59 sounds like your problem?

TIL Brother is that old. Love their modern printers! Indestructible and the laser ones last forever on toner.

Fixed the IBM 5151! Seems when I reconnected the video wire the bipolar cap had killed itself. It became disconnected from the two terminal pins. I wonder if the cap was what caused the wire to melt in the first place? Anyways, recapping the whole board + replacing the bipolar with a film cap...

Well, I found the issue! The video line had burnt off on the board side (the wire that goes to the neckboard). However putting the chassis back in now the display won't power on :(. When removing the main power cable to the chassis the thing was mighty stuck, so I thought I may have broken...

Got a IBM 5151 that I've been trying to figure out. The CRT has power, but no video shows up on the screen (setting the brightness to max shows raster lines). Tried replacing the 7406 chip. Checked the contrast pot and it goes from 0ohms to 500ohms Checked against a IBM 5150 first (MDA and...

Here are two pictures of the drive: http://imgur.com/a/OCzlU I am selling it $400 (or best offer), half the price of what most of them are going for ($700-$900). The floppy drive powers on, but I don't have the means to test it currently. Due to the age of the hardware, selling as-is. It...

Got a new complete PDP, selling my PDP-11/04 I bought a more complete PDP-11 and will be selling of my PDP-11/04. It has both panels as well as a whole bunch of cards. They are incompatible with the new one I got since it's a QBUS model...

I bought a more complete PDP-11 and will be selling of my PDP-11/04. It has both panels as well as a whole bunch of cards. They are incompatible with the new one I got since it's a QBUS model. http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=150957191763

Ebay listings: IBM 5151 Monitor SOLD Mac SE/20 ($50 buyout): http://www.ebay.ca/itm/Vintage-Apple-Macintosh-SE-20-/150799924072?pt=LH_DefaultDomain_2&hash=item231c603b68

Some of you may remember a while back I was interested in a PDP 11. Almost got a 11/34 but the guy scrapped it before I could get it. While browsing ebay, I so happened to find a 11/04 with 4h remaining. Sniped it at the end (sorry to the two other bidders who were fighting each other) and won...

http://cgi.ebay.com/IBM-PC-Printer-Paper-Box-Manual-Game-Video-Stamp-/250819240150?pt=LH_DefaultDomain_0&hash=item3a65fde0d6

Earlier I talked about my interest in the PDP11. I got a few cards for the CPU cabinet (still need a lot more) but I am having trouble figuring out which backplane I need. The installation manual mentions part 7011051 Rev D for the KB-11 C Processor. Is this the part I am looking for? Do they go...

This ebay account annoys me when I am searching for vintage computers. Recently I have been looking for a 5150, and this guy has like 8 5150s for $300+, and most are in incomplete condition! Example (5160)...

I read today that plugging a 5151 into a CGA Card will fry the monitor. Is this true? If it is, I am lucky because I probably would have done so not knowing. I also have a Commodore PC10. Is the 5151 compatible with video out on that machine? When I bought the PC10, it was had a photo of it...

As the title says, looking for the manuals and the system disks (the ones that control various hardware).

Got a PC10 recently with keyboard, in great condition other then a few dirty marks. However it did not come with a monitor. What monitor did the PC10 use? Also was the DOS used for it their own variant, or MS-DOS? Which Version? Going to post this in Marketplace but anyone have the manuals and...

Hello everyone, been looking into older pre-PC computers, and getting really interested. I love programming older vintage computers (why I collect them), and have been playing around with a Altair 8800 simulator. However after watching this video: http://www.youtube.com/watch?v=XV-7J5y1TQc I...

I really don't want to do this, but I need that cash. Selling off my computers (Keeping my C64 and maybe Amiga). Here are the kijiji ads (don't want to retype/has pics) http://toronto.kijiji.ca/c-buy-and-sell-computers-Vintage-Computer-IBM-5155-IBM-PORTABLE-W0QQAdIdZ228796724...