Mac Classic won't boot - damaged circuit?

[Goodnight]

Hi all

I'm new to the forum but not, of course, new to loving classic Macs. I've bought a Mac Classic that has been sitting in a cupboard for many years unused. However, it doesn't boot. I'm attaching a picture of the boot screen. 

The logic board seems to be in good condition (I've replaced the PRAM battery and washed the board with isopropyl alcohol). However, there's one particular connection on the board that worries me - see the attached pics.

What do you think? Is the board toast? I'd be very grateful for any help!

Cheers

CG  

 

[techknight]

RECAP. Seeing these threads over and over and over again are starting to make my skin crawl. 

All macs from early PPCs on back with the exception of just a few, need new caps at this point before you can do ANY level of troubleshooting! 

We almost need a prompt that says this and requires confirmation before posting topics/threads. 

Oh and the Classic is a double-whammy because not only does the logic board need caps, so does the analog board. No getting around it. 

 

[Goodnight]

Yes I've already purchased the requisite caps, and practiced my soldering skills on a dud circuit board. But because my soldering skills are not strong, I figured I'd try to boot naturally first.

However, if that is a dead circuit track that I've pointed out, then my soldering skills will probably not be enough.

 

[techknight]

Well it depends, you will have to meter that connection out. Its caused by the capacitors leaking. 

One of my SE/30 boards have a trace like that, but its still connected and working. So you will have to meter it to know for sure. 

If your not comfortable with recapping, there are people who offer this service here so I would take that angle. 

 

[MikeatOSX]

Here are many PDF books to download regarding Macintosh SE / SE/30 repairing:

http://vintageapple.org/macbooks/

 

[techknight]

Nice. Good resources there. 

 

[MOS8_030]

Howdy! Welcome!

Glad to see another Classic Mac come out of the cupboard and come back to life.

There's plenty of resources and friendly folks here who can help you get your Mac back in shape.