More broken Apples...

[Mike van Bokhoven]

Alexandre Souza wrote:
>> 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)
>
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.