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Well I confirmed the PSU works and partially resolved the issue...
I created a reverse polarity switch with 2 x 10k 1/4w resistors and an 80V 500mA PNP transistor. Jeff's switch calls for 2 x 10k 1.8w resistors and a 40V 250mA PNP transistor. Unfortunately this was the best I could find at Fry's. I know nothing about electronics, but this seemed the closest...
Now the PC turns on for 5 seconds and then switches off! It turns on and stays on if I unplug the switch immediately after it powers on. I tried this trick with a different standard polarity switch and confirmed it requires the reverse polarity switch to work.
So the question is, is this happening because I am using the wrong components for the reverse polarity switch or because of a problem with the delays on the DS-ATX?
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Audio: 4 * Rainbow Audio Germs + Infinity Basslink / Case: iStarUSA S3 / CPU: C2D T7200 / MB: MSI Fuzzy 945GM2 / SC: E-MU 1212M SC / RAM: Corsair 512MB / HD: Hitachi 7K200 2.5" 100GB / DVD: Panasonic UJ-815B / PSU: Opus 150w / LCD: 7" Xenarc
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