tezza wrote:Hi Mike,
Is it likely to be battery damage? What's the symptom in the Lisa?
tezza wrote:Ok. Rolling screen. It's likely to be video card...maybe caps or perhaps just an adjustment.
There are so many things that can go wrong with these old machines. You are sure the boot failure is not due to the disk?
That does seem to be a rolling screen in that first set of images.
At least the fact it is intermittent would suggest some flaky connection or cap out of tolerance. In my experience if ICs fail they fail..full stop. Is it worse when the machine gets warm? I'm sure you would have reseated any socketed chips, yes?
There is a Lisa facebook site and also LisaList that has some Lisa gurus on it. Do you subscribe to those?
Unfortunately I only have one Lisa/2 10 CPU board and thats the one in my machine. I won't be sending that anywhere.
I'm guessing A fault in the lower RAM addresses could cause a fault like this too. Do you have two 512k RAM boards and if so have you tried swapping their positions?
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