21 Dec
2007
21 Dec
'07
1:41 a.m.
On Fri, 21 Dec 2007, Jos Dreesen / Marian Capel wrote:
The machine functions, but the defective IC shows up
as a white stripe on the
display since it is part of the video frame buffer. Changing the IC did not
help, of course also the 4116 replacement I used could have been defective.
What about a broken copper trace, defective data or address buffer/driver
or mux/demux? I had a similar fault on the graphics adapter in the IBM
5110, one bit of a multiplexer was bad.
Christian