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Date Posted: 05:59:11 10/27/01 Sat
Author: Adam
Subject: Re: Failed VGA mod - I think I killed my CC !!!!
In reply to: Chris 's message, "Re: Failed VGA mod - I think I killed my CC !!!!" on 05:25:02 10/27/01 Sat

Thanks for the reply,

I reopened the CC to remake the pin 8-12 connection (I wanted to make the solder joints as small as possible to be positively sure that they weren't shorting out.

Wedged in the back of the a/b, near the power and fan connectors was a f***ing sewing needle (#&#&#@). In its position, It would have shorted the board to ground (via one of the metal feet which holds it above the metal plate it sits on)

I removed the needle, and remade the joints, but nothing's changed. There's a chance the needle got in after I powered on the system while I was remaking the joints and played no part in the failure, but I doubt it as I don't exactly leave little metal things lying around where I fiddle with computers.

If the needle was responsible, the fact that the failure continues after it was removed would make the damage permanent.

I'll chase up your lead on the aluminium wires. I took special care with the solder joints to make sure they came out bright and shiny ( I had the MacFAQ guide to soldering printed out with me), but who knows, I'm not really an expert solderer. One problem is that you can't check continuity along the wire once it's installed (or resistance for that matter) as said continuity is provided elsewhere in the circuitry. I did a cont. test with one end of the wire soldered on the board and the other hooked up to my meter and that was fine, but I didn't check resistence.

Plan of attack, moving along as each previous step fails:

I. Replace aluminium wire with copper one stolen out of power cord or something
II. Check all solder joints
III. Revert a/b to original state to make sure it works at all.

I have this bad, bad feeling that I'm going to get some personal experience on just how exceedingly rare and expensive CC a/bs are. :(

Regards,
Adam.

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