Re: IIgs won't start up -- ZipGS dead?
- From: Mitchell Spector <mitch2gs@xxxxxxxxxxx>
- Date: Wed, 09 Aug 2006 00:12:38 -0400
"Bill Garber" <willy46pa@xxxxxxxxxxx> wrote:
"BluPhoenyx" <bluphoenyx@xxxxxxxxxxxxx> wrote in message
news:iMcBg.4536$xp2.2371@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
: Mitchell Spector wrote:
: > Another update: I decided to have a closer inspection at the solder
: > joints on the backside of my ZipGS, so I used my flatbed scanner as
: > a sort of digital magnify glass.
: >
: > I spotted what appears to be a bad solder joint on one of the lower
: > oscillator socket pins (by no coincidence, this is also the area where
: > when touched, will cause the cache LED to flicker on and off). It looks
: > like all the solder around the pin dried out and is missing.
: >
: > Here's a shot, showing the backside of the oscillator socket:
: > http://www.digitalsparkles.com/student_a/ZipGS1.jpg
: >
: > Here's an close up of that suspect pin:
: > http://www.digitalsparkles.com/student_a/ZipGS2.jpg
: >
: > My only concern is why pressing on it (to temporarily rebridge the
: > connection) still leaves the GS in a dead state. I'll try it in another
: > motherboard tomorrow but I think getting someone to resolder this
: > pin will be the first step.
:
: Perhaps the oscillator is dead. It's also possible that the connection
: isn't that good during this "bridging". I would suggest that someone
: carefully examine the other connections as well.
Looks to me like the other connections aren't so good either.
Seems from just these connections that the whole card may have
been spiked heavily. Possibly a static charge from the PSU while
powering down, or up even.
I'm leaning more towards Mike's theory, especially considering
what put it in a non-functional state was my pressing *very* firmly
on the oscillator just seconds before it went dead.
Over the weekend I tried the card in a different motherboard
with a different CPU ribbon cable. No change, same symptoms.
Hopefully resoldering that _single_ pin will fix it, though I'm going
to have to find someone to do it for me.
Mitchell Spector
.
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