Classic II

[Patrickool93]

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?

 

[joshc]

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

 

[Unknown_K]

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.

 

[Scott Baret]

Does anyone on here re-cap Classic analog boards? I've got several that could use it.

 

[Mars478]

Just whatever you do, dont do what I did.

xx( :'(

 

[Patrickool93]

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?

 

[Unknown_K]

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?

 

[Patrickool93]

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.

 

[Unknown_K]

Get an old toothbrush and some soap and see if they scrub off.