Delete comment from: Ken Shirriff's blog

Ken Shirriff said...

Interesting question Dan. We saw some internal repairs on the faulty power supply, so it must have had some malfunction in the past. This might have damaged the capacitors (overheated? overvoltage?) causing them to fail sooner. Although it's possible that the capacitors in the other supplies are bad but not bad enough yet to cause visible problems.

Jun 22, 2016, 2:21:45 PM

Posted to Restoring Y Combinator's Xerox Alto, day 1: Power supplies and disk interface