Trash to Treasure? I rescued these four TRS-80 systems from the trash. Can I resurrect them?

If you’d like to support the channel and help me to produce more videos like this, you can find me on Patreon: You have my eternal gratitude! I’ve had these four TRS-80 computers (Model 3 and Model 4) sitting in my garage which I rescued from the trash. I think it’s high time I got around to resurrecting them. Can I save all four of them? Here is some info on the diagnostic ROM I used: Huge thanks to @adriansdigitalbasement and all of the co-authors of the diagnostic ROM. Your code is out here saving lives!! Vintage computer repair and restoration.