Thread
Classic II
I picked up a Classic II yesterday for $3 at a church rummage sale. Today I finally got the chance to power it on and check it out. Unfortunately I was greeted with this:
No bong no resone from the KB/Mouse, and nothing but a cramped blank screen.
So I opened it up and saw some capacitor goo, expected, and some corrosion. I cleaned up some of it with some alcohol and a q-tip. I tried it again, but to no avail. Here's a picture of the worst corrosion.
So I remembered a spare Classic I board, and tried it in place of the II board. It turned on to this:
Partial success!
I'll make a post in the compact forums, but does these symptoms ring a bell to anyone?
No bong no resone from the KB/Mouse, and nothing but a cramped blank screen.So I opened it up and saw some capacitor goo, expected, and some corrosion. I cleaned up some of it with some alcohol and a q-tip. I tried it again, but to no avail. Here's a picture of the worst corrosion.
So I remembered a spare Classic I board, and tried it in place of the II board. It turned on to this:
Partial success!I'll make a post in the compact forums, but does these symptoms ring a bell to anyone?
Needs a proper restoration. Replace all caps on logicboard and analog board if you know what you are doing. Otherwise, let a professional do the recap for you.
Also, read this:
http://68kmla.org/files/classicmac2.pdf
Also, read this:
http://68kmla.org/files/classicmac2.pdf
I just recapped my Classic II, a bit of a pain because everything is cramped but doable.
You need 3 different values, maybe 13 total aluminium capacitors going from memory.
You need 3 different values, maybe 13 total aluminium capacitors going from memory.
Does anyone on here re-cap Classic analog boards? I've got several that could use it.
Just whatever you do, dont do what I did.
xx( :'(
xx( :'(
Well, after a through cleaning/drying to see if I can get it to boot temporarily it still does the same. I'm thinking even if I replace the capacitors that it will still be dead because of the corrosion on some chips. So... anyone have a spare Classic II logic board?
The only dead motherboard I cannot revive (so far) by replacing capacitors is one from an 840av that has some gook under important chips. I can't tell from your picture how much corrosion there is, is it greenish?
I dark green on the pins of a few chips behind the serial ports, as well as blue/green on the chip directly next to the internal floppy port. Actually, I just looked at it, many random chips appear to have the corrosion. None on the on board RAM though.
Get an old toothbrush and some soap and see if they scrub off.