Macintosh Classic II .... is it dead please help

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Joined: Apr 28 2009
Posts: 7

i recently got a macintosh classic II (at the MIT swap meet, that was "working") when i got home i tried to turn it on i heard the fan start up but the screen was blank. just blank nothing was happening, so i decided to open the beast up and discovered that all the cables to the board so i re-hooked everything (the power, the hard drive, and the floppy). after that i was feeling really good and turned it on only to see very thick vertical lines with dashes (i have heard this called the stars and stripes). after trolling the internet for answers i found out that the ram may be loose or need the pins cleaned i also heard alot about leaking capacitors. so i opend it up again and this time i took the ram out and cleand it with rubbing alcohol. i also looked at the board it didnt appear that any capacitors had leaked but i decided to clean around them as well. then i put the whole thing back togeather and ... same problem any ideas or should i just junk the whole thing??

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Joined: Jul 9 2006
Posts: 61
Do you know how to replace th

Do you know how to replace the capacitors?

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Joined: Apr 28 2009
Posts: 7
not really but im up for gett

not really but im up for getting my hands dirty

Dog Cow's picture
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Joined: Dec 11 2008
Posts: 463
I've had an SE/30 and a Class

I've had an SE/30 and a Classic which both used to have that problem, and a temporary fix is to turn the machine on and leave it on until it chimes. This can take anywhere from 30 minutes to 2 hours.

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Joined: Apr 28 2009
Posts: 7
then what it just works?

then what it just works?

Hawaii Cruiser's picture
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Joined: Jan 20 2005
Posts: 1434
Yep, they work just fine once

Yep, they work just fine once they boot up. At least, the two I have do that. Here's your babe, right?:

We've discussed this problem a few times on AF so you'll find those threads here somewhere. I've found the best way to find threads here is to type applefritter into google with the appropriate other search terms. The AF website search engine is often useless.

Basically, the solution is replacing the capacitors. There are some who claim that taking the motherboard out and washing it and letting it dry can solve the problem temporarily.

I always feel obligated to direct you to this article also:
http://lowendmac.com/tech/crt_danger.html

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Joined: Apr 28 2009
Posts: 7
well thanks i tried leaving i

well thanks i tried leaving it on at the 2hr 8 min mark i threw in the towel. so it looks like i will have to look into replacing the capacitors. any idea where i can can pick them up and how much it might cost?

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Joined: Apr 28 2009
Posts: 7
i was thinking of replacing t

i was thinking of replacing the capacitors whats the best method for going about that? i have a soldering iron

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Joined: Apr 28 2009
Posts: 7
i also took alook at the anal

i also took alook at the analog board and saw what looked like so white substance on a few components kind of like dried hot glue. could this be causing some problems?

cwsmith's picture
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Joined: Oct 13 2005
Posts: 699
Leave it there

The "white substance ... kind of like dried hot glue" is in fact hot glue, and is supposed to be there. It mainly keeps the components from moving around and (a) weakening the leads to the point that they break or (b) touching one another and causing all sorts of problems.

I've seen similar use of hot glue on iMac G3 step-down boards, eMac step-down boards, and other power/analog/transformer boards in all-in-ones.

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