Re: Restoring IIGS with Transwarp IIGS --> identification if loose IC

[dalloff@gcfn.org (Dave Althoff Jr)]

Paul Grammens (grammens@svn.net) wrote:

: Dave Althoff Jr <dalloff@gcfn.org> wrote
: >
: > Which reminds me...anybody got any ideas where I should look for trouble
: > on my TWGS?  Factory configuration, but once the machine heats up a
: > little, it starts crashing.  Perhaps I need a new 65C816 for the TWGS?  Or
: > is there another likely culprit?
: >

: You might try "technician in a can", also known as freeze spray. Keep half

I like that term!  In fact I just used it over the weekend to identify the
blown component in my parents' 1984-model Mitsubishi console TV set.  Now
if I could just get the replacement part...!  8-)

: the board cool with a light spritzing, see if the crashing stops. If so,
: spritz half of that area, see if the crashing stops, etc. That way, you
: should be able to isolate the problem component.

Hmmm...It's been a while since I had the TWGS in, but I am not certain
that the crashing was predictable enough for a can of freeze spray to
narrow it down.  It's certainly a thermal problem...I remember it took
longer to get a crash when I ran the machine in Classic Apple Hacker Style
(i.e. with the lid off.  Remember the ][+ and ][e where you could run a
desktop ][ with the lid off, especially if you had a monitor stand?  IIgs
doesn't work quite as well that way...nothing to balance the monitor on...

: A couple of caveats, no need to get it too cold, beware of condensation if
: the humidity is high.
: BTW, one type of component with a limited lifespan is the electrolytic
: capacitors. They don't last forever.

: -Paul   (credit to Rich Bacon, beloved electronics instructor at SRJC for
: the term "technician in a can.")

I gotta remember that one!

--Dave Althoff, ][.
-- 
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