Posted By
Ian Colquhoun
on 2011-01-24
21:07:22
|  Partially dead Plus/4
Out of 3 Plus/4's I've acquired, only one even comes close to working. Currently I get a screen that looks like this http://postimage.org/image/251qn0nms/. I've tried swapping the TED, 8501, kernal ROMs, the PLA, and removing the 3-plus-1 ROMs and still get the same screen. What you don't see in that shot is the flashing black cursor at the home position. The keyboard is non-responsive. When I press the reset button, garbage flashes across the screen - mostly @ symbols, but not all.
I'd love to be able to piece together at least one working machine. Any ideas what I should try next?
Thanks!
|
