I have an Apple /// that I've had for many years; it's never worked.
When you power it up, you get a checkerboard screen, where half the squares
are solid white, and the other half have a little mosaic pattern in them.
Looks like this:
https://share.icloud.com/photos/0NHNkEG9ssPsi65ojivBteKaQ
Do
Adam Thornton wrote on Fri, 5 Jul 2019 11:38:56 -0700
> I have an Apple /// that I've had for many years; it's never worked.
>
> When you power it up, you get a checkerboard screen, where half the squares
> are solid white, and the other half have a little mosaic pattern in them.
>
> Looks like t
The first 15,000, or so, Apple ///s had a problem where the very large,
dense, poorly mechanically-supported motherboard would warp as it heated up
after power-on. That resulted in ICs popping up in sockets enough to break
contact, as well as micro-cracks in printed circuit board traces. The
warp
Bad video memory?
Our Lisa does that too...
I just leave it shit off (grin!)
Ed#In a message dated 7/5/2019 2:28:31 PM US Mountain Standard Time,
cctech@classiccmp.org writes:
Adam Thornton wrote on Fri, 5 Jul 2019 11:38:56 -0700
> I have an Apple /// that I've had for many years; it's ne
>
>
>
> >
> > Looks like this:
> > https://share.icloud.com/photos/0NHNkEG9ssPsi65ojivBteKaQ
> >
> > Does this failure mode ring any bells? Obviously the video signal is
> being
> > generated well enough to sync a composite output. Any idea whether I
> > should start by replacing the CPU or the
