Thursday, January 19, 2012

Color Classic falls victim to leaky caps


After nearly 20 years of service the Macintosh Color Classic that powers the Color Classic web server succumbed to the fate most common to vintage electronics: leaking capacitors. If you examine the picture of the logic board above you can see the evidence yourself - the dark areas around the three round capacitors in the upper right corner are the most telling.

The Color Classic web server has been extremely reliable until recently so when the picture disappeared last week I thought it might be related to the CRT. Swapping out the logic board with a replacement brought it back to life, and examining the original logic board revealed the telltale dull, dark areas around the capacitors that signify the aluminum capacitors have leaked their electrolyte onto the circuit board causing connections to fail and the computer to no longer work properly.

For an in-depth guide on how to fix this symptom yourself, check out this page from the 68kMLA Wiki that includes directions and replacement part numbers for those who can confidently perform soldering operations.

But fear not, the Color Classic web server will be back! The original board is currently being repaired by a professional and in the interim is temporarily online with a backup logic board. That board unfortunately has issues of its own, so uptime may suffer somewhat until the repaired board is reinstalled.

Meanwhile, I recently acquired another Color Classic with a Daystar PowerCache 33 accelerator and will be profiling it here soon. Stay tuned!

1 comment:

Xanderk9 said...

I have discovered your website only a few days ago when I was looking for some information for my color classic. I am surprised that it was running for that long.

I have this one for at least 10 years and the only problem I had yet is the PRAM battery (which is very easy to replace). I guess I am kinda late for trying to upgrade this computer because third party addons and "mystic upgrade" parts are no longer available. Perhaps at least having the FPU, vram, ram and network card addons should do.

Anyway, can't wait to see your web server to be back up. :)