As I said Thursday
, my Classic died the same day as its creator. When I opened it to see if it was a simple matter of cleaning the motherboard, I found one badly-corroded battery and chassis inside. Surprisingly, the Classic had worked just a day prior, when I was doing some software tinkering. I was amazed it would even run with that much corrosion.
So this got me to thinking that I should start checking all of my oldest systems for capacitor leaks, burst batteries, etc.
Centris 650 = check. Battery was good, no capacitors to worry about. Board & PSU was clean.
IIsi = check. Capacitors are good, battery was removed a couple years ago. Clean.
Tonight, I brought out the IIfx. Popped it open and was pleased to see both batteries in good shape. Plugged it in, attached a monitor, keyboard, etc, and pressed the power button -- nothing. No chime, no fan, not a sound.
There are only two capacitors on the board, from what I can tell:
Both show signs of leaking, so I decided to pull the board and wash it. Now, the batteries look
good, but they both have "90-09" stamped on them. The machine's build date is September 1990. So these batteries are probably quite dead. This would also keep it from booting, although I would think the PSU would at least turn on. I examined the PSU and there's no sign of any damage, and it's pretty clean. So right now, I'm assuming the problem is either the capacitors or the batteries.
Incidentally, both batteries have this weird nick in the positive end:
Yet there's no fluid or corrosion anywhere.
I removed all the RAM and the ROM SIMM for cleaning. What about the processor? I don't want to try removing it if I don't need to (or am unable to). Is there anything else I should remove before I run it thru the dishwasher?
Macs: Classic, IIci, IIsi, IIfx, LCIII, Macintosh TV, Centris 650, Q840AV, Q950, PM6100-DOS, Radius 81/110, WGS 8150, 6400, PowerCenter Pro 210 (x2), G3 400 B&W, G4 Cube 500, G4 QS Dual 800, Mac Pro 2GHz
Laptops: Duo 280c, 3400c/200, 15" MBP (L2008)
Neato Misc: PowerCD w/remote, Powered Speakers II, LaserWriter IINTX, ImageWriter II, StyleWriter II, Color LW 12/660
Looking for: Plus, SE/30, Color Classic, DuoDock, Mac Portable, Duo 280 keyboard, Q950 CD bezel, TAM