Category Archives: VT100

VT100 Video Display – Failed Flyback Transformer

Posted on March 30, 2026 by rjarratt

I have been repairing a VT100 that I acquired a while ago. I have got it to the point where it works except for the actual video display, as described in a previous post. I wanted to try to get … Continue reading →

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VT100 External Video Fixed

Posted on April 28, 2024 by rjarratt

I have been making progress on restoring the VT100 I acquired some time ago. The RAM is now OK and the keyboard interface is working. However, I was still not getting any output on the screen and I know that … Continue reading →

Posted in Retro-Computing, VT100 | 1 Comment

VT100 Keyboard Constant Clicking Fault

Posted on November 19, 2023 by rjarratt

In my last post VT100 RAM Fault I reported progress on fixing my VT100, getting past a RAM fault, but I left it with a fault where the keyboard constantly clicked the speaker. I knew the keyboard was OK because … Continue reading →

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VT100 RAM Fault

Posted on October 1, 2023 by rjarratt

[Updated 14th October 2023] I acquired a VT100 a while back. It was just the video unit, without a keyboard, but I have a couple of keyboards for my VT101 and VT102, so I would be able to use it … Continue reading →

Posted in Retro-Computing, VT100 | Tagged | 3 Comments