[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Apple IIpluse motherboard problem



In article <621e24ace9a335cc0cb3e34c34b27d23.10725@mygate.mailgate.org>,
Vince Briel <vbriel@yahoo.com> wrote:
>Hi, I have an extra ][plus motherboard that when powered up, just gives
>scrambled text on the screen.  I have swapped out all of the chips with
>my
>other ][plus (except 555's which are soldered on the board), and no
>change.
>Any ideas?  I checked resistors and they are all good, and I don't see
>any
>blown caps or bad solder joints.

Sounds like the 6502 isn't running at all.  Somewhat hard to test without a
scope.  Have you tried a manual reset?


-- 
Matthew T. Russotto                                mrussotto@speakeasy.net
=====
Dmitry is free, but the DMCA survives.             DMCA delenda est!
"Extremism in defense of liberty is no vice, and moderation in pursuit
of justice is no virtue."