26 Apr
2009
26 Apr
'09
5:32 a.m.
Alexandre Souza wrote:
A good idea! I'm pretty sure I did it when I first looked at these
machines a while back, but it's worth rechecking. I'll give it another
go. Maybe it's no coincidence that the one machine that works fine has
most chips soldered directly to the board.
Mike.
So, my next
step is to track down a schematic for the machine, and see
what I can figure out. I'm guessing I should look first at anything that
deals with the high four bits of memory. Thoughts, suggestions and
intuitive guesses welcome!
If the machine IC's are socketed, pull them one of a time and
reinsert. This simple procedure does wonders :o)