Analog Board Molded Minbox Capacitors... EXPLODEY!

#1 Wed, 21 Mar 2012 - 01:11 68kMLA

So I was spending time one day with my Mac Plus, look away for a little bit, and look back and smoke is billowing out. Instantly pulled the plug and investigated: C38 on the analog board.

I recently acquired an early upgraded 128k which also had the same capacitor blown apart. I went to my favorite little electronics store, and the owner said she hadn't seen a capacitor like it in her 18 years working there.

So... Anyone know where to find these antiquated little caps?

#2 Thu, 29 Mar 2012 - 10:05 68kMLA

IIRC you should be able to replace them with ceramic caps rated for the same capacitance and voltage.

#3 Thu, 29 Mar 2012 - 19:12 68kMLA

Those are the same sort of caps that blew on my TRS-80 power supply. I replaced them with mylar film capacitors at the same rating.