What is this rare multi-user UNIX workstation? (Plexus P/20)

Getting online with a DEC VT-220 terminal

First power up of the Plexus dual processor UNIX system (Plexus P/20)

Can we save this heavily corroded IBM CGA card?

The PicoMEM is an amazing software defined ISA card

Let's go treasure hunting in "mystery box #2"

These are some cool disc drives but we have some issues (Atari 810)

I got stuck trying to fix this 40 year old RAM card (AST MegaPlus II)

Can we fix bad chips ... in the oven?

It was a long road to booting DOS68 on the old SWTPC 6800

I know nothing about the Sega Master System. Let's fix this one.

I might have to give up on the "RAM issues" motherboard

This Mac nearly had me beat! It fought hard but I got it in the end.

Mac motherboards with cool 3rd party RAM boards (Mac's-a-million)

Finding an intermittent fault on the Book8088 & adding external CGA output

I just can't escape computers with RAM problems!

Another broken Mac Plus with some odd symptoms

0084 A battery powered 486DX2/66 setup and a 386 motherboard with a fancy BIOS

Fixing two C64 motherboards with hot chips

I've got a pile of broken C64s, let's fix a couple!