30 Jun
2003
30 Jun
'03
3:14 a.m.
I'm not sure about the Classic II, but I know on the other compact
macs, a big problem was C1 on the analog board, and cracked solder
joints on J4 and J1. This generally caused "vertical line disease"
where the display collapses into a vertical line. When the machine
won't turn on and makes a "flup flup flup" noise, then there are
generally more severe problems. T1 could have failed, or an
electrolytic capacitor. Check C3, C24, C25, C26, C29, C30 and C31.
These may be different on the Classic II. I haven't really had to fix
many Classic II's, mostly just the earlier macs (Mac Plus
especially...). Also, just check for obviously burnt parts, bulging
electrolytics and cracked solder joints.
Ian Primus
ian_primus(a)yahoo.com
On Monday, June 30, 2003, at 06:04 AM, Mark Firestone wrote:
While we are on the subject of Macs, I have a
question.
I used to work in the Mac Repair shop at ASU, fixing dead Macs. We
used to get a lot of the old "all in one" (SE, SE/30, Classic, Classic
II) Macs in with bad analog boards (they would make an evil buzzing
noise one day, and then just refuse to work...)
We would fix this by replacing the bad board, as you do, not repairing
the board itself.
My Classic II got left on over the weekend, and was found dead and
buzzing. It needs a new board. I was wondering if anyone knew what
component it was on the analog (or power/sweep) board that causes it
to die, so could fire up my soldering iron and have a go...
...much easier that enplaning to the aforementioned wife why I spent
?30 on a computer that was free if i would remove it...
Take Care,
mark
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