Quote from: ZiG on May 13, 2014, 05:03:46 AM

Quote from: Firebird2000 on May 12, 2014, 01:00:41 AM

Quote from: wolfey2014 on May 10, 2014, 04:31:20 PM

Quote from: poopypants on May 10, 2014, 04:12:58 PM

For some reason my units are dropping like flies. In the past 24hr three units have burned the USB ferrite bead. I can't seem to make any connections for why this is happening, one unit has VOLT mod 1; two bridges, has been running for a month. The other two have "R-52 or R139" mod with 47k and 50k resistor, also been running stable for a month. None of the units shared the same USB hub so I crossed that off the list of possible failures, two shared the same power supply but the ferrite bead that burned is for the USB hense 5volts so not sure if that would have mattered. I am lost finding any correlations between the units that failed, possibly just a coincidence or a weak part, but its suspicious that 3 have failed in the past 24. We shall see, now have to order new parts and wait to get them back online.

Could just be fate Wink

Are you using one of those crappy LED power supplies? Could be the cause and a sign that it's about to crap out and ruin all your miners.

I'm using high grade clean switch mode power supplies. Never use cheap crap power bricks or LED power supplies. LED's don't care about high ripple. Seeds do!

Remember, warm seeds are better than cooked seeds Grin

Good luck!

This seems to be hppening to me as well.
It started today. Out of my 10 units, 3 have dropped out on me.
All have the 49.9k Mod.
I am using a 1200W Gold rated power supply, PCIE connectors to run them.
They have been going along perfectly for a few weeks now, until today.
Now I have 3 dead soldiers.
I run them remotely, so I won't be able to look at them until tomorrow.
But...something is going on here....I'm a bit worried about the other 7......

@Firebird2000 and @poopypants ...:

Could both of you measure the voltage on C42 ( DVDD ) and POST it back...?

Check the dead ones too...

ZiG

Sure give me a little when I get home, Ill post.

FireBird2000 is it the USB ferrite bead? FB25, that burned? Cause that is what happened to mine. One is still running, after the transplant from the other units FB26.