I can't offer anything on the unusual LED state, but what happens when you unplug and replug the nonworking unit with cgminer running? Does it detect the new stick?

Troubleshooting could involve dropping back down to 100 MHz to see if both sticks initialise. I found when running at speeds over 200 MHz I might need to replug several times to get the stick to fire up. At 500 MHz it can take several (up to six) before the stick starts hashing. I've also found that when cgminer detects the stick but fails to hash, I get a single blip of the white LED (looks white to my eyes) but no further activity, and the ASIC voltage measured across the cap is about 0.265 volts.

A successful replug at inadvisable clockspeeds sees the initilisation flash, and then a few seconds later the little white LED blinks happily away and the ASIC voltage is whatever I've set it to with the trimpot.

I've also noticed a weird trend with my stick. 325 MHz is its sweet spot, but when I first run cgminer it'll spend about 2 hours hashing at 21-23 avg GH/s, and then climb up to the 35-36 Gh/s that it tootles along at when running at 325 MHz.


Poor little ASIC. You shouldna done that; here were jist a boy.