So I discovered one of my hashboards died last night on one of my two X10's. These are from the $1600 batch at end of May/start of July (5/26).
I noticed my hash was low on one rig consistently and it was only getting 3-3.5 GH/s on Skein; so I pulled up the web portal and noticed one hashboard was reading 49*C while the others were 35*C like normal. This 3rd board was actually submitting shares and and DOES somewhat hash; but only at 10% the speed of a normal board. So if the two other boards submit 50 shares the bad one will put out 3-5 maybe.
I soft-rebooted the miner a few times and the temp no longer gives any reading other than 0*C (wonder if it burned up?) I contacted support and since I'm just about 3 months old i'm out of warranty and pretty much SOL :/. I talked to a friendly tech on the phone who suggested I take it apart and switch the hasboards around but to no avail. They offered to sell me a new hashboard for around $300 or a new unit for $900 with $92 ship (so basically full retail for a replacement board).
The miner can still run with 2/3 of the hashboards but for a barely 3mo old unit @ $1600 + ship there's no way i'll ROI with only 2 boards and 3 GH/s.
I will take off the heatsink of the bad board later today and inspect for damage; I didn't see any when swapping the boards last night but I suppose it would most likely be under the heat sinks if there was any.