MattisLind
Veteran Member
I received two VT100 boards and a VT125 board.
One VT100 board was completely dead. Occasionally it would print some garbage characters on screen and never give the POST beep. This board was still in box and stickers on it that it had been in DEC facility in Netherlands to do repair in 1983.
The other VT100 board did POST self test but showed this output on screen:
The repeating SETUP text is weird. Some logic that doesn't work properly? And maybe the font PROM? The other pictures show the screen when entered a few characters in local mode. The vertical row to the right is not something I have typed in but generated "automatically" by the VT100 itself.
The VT125 showed "VT125 IC Error" on screen when powered up.
Before I start dig into this and attaching logic analyser etc I'd just wanted to ask if anybody seen these error symptoms before and could give a hint on where the problem could be.
One VT100 board was completely dead. Occasionally it would print some garbage characters on screen and never give the POST beep. This board was still in box and stickers on it that it had been in DEC facility in Netherlands to do repair in 1983.
The other VT100 board did POST self test but showed this output on screen:
The repeating SETUP text is weird. Some logic that doesn't work properly? And maybe the font PROM? The other pictures show the screen when entered a few characters in local mode. The vertical row to the right is not something I have typed in but generated "automatically" by the VT100 itself.
The VT125 showed "VT125 IC Error" on screen when powered up.
Before I start dig into this and attaching logic analyser etc I'd just wanted to ask if anybody seen these error symptoms before and could give a hint on where the problem could be.
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