On Thu, 31 Mar 2011 21:36:31 +1100, "Phil Allison"
wrote:

** With all those damn electros installed in reverse polarity, be a damn
site easier to alter the DC rails to suit - wouldn't it ??

I thought you would be amused. I don't think that the IC's would
appreciate the reversed power supply polarity.

It took me about 45 minutes to tear down the XPS-200, replace 11 caps,
reassemble, and test. It's now running an overnight burnin. I also
fixed two of the other machines in about 30 minutes each (fewer caps
to replace). What I found interesting was that the XPS-200 again
worked for about a week with reverse polarized caps. My usual 24
burnin is probably inadequate as I didn't bother doing a visual or
thermal inspection after the burnin.

Yes, I also learn from my mistakes.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558