Quote from: ur0pl on October 20, 2013, 08:18:22 AM

Quote from: DPoS on October 20, 2013, 07:48:02 AM

Quote from: ur0pl on October 20, 2013, 07:31:04 AM

One of my miners hashes to a max for a like 4+ hours straight; then, everything fails. it goes to like infinitety hardware errors and 0 hashrate. What could be wrong and how could I fix this?

you're probably using pre-94 FW and one of your dies/VRMs is a bit flaky

with fw .95 and .96, they each give me a high hash rate whereas .96 is 20 gh/s more; however, after running at that level for four hours the hashrate went down to 1.86 mb/s. Then, after restarting it again, it would give out after about 30 minutes; then, it would do it in like 15 minutes. Is my Jupiter dying?I ran enable cores.bin. I don't know what could be wrong. Bertmod reports that most of the cores are on, only about 38 out of the 768 are off. Furthermore, the 5s hashrate shows it is getting a 525+ gh/s , but the avg hashrate is 1.86 mb/s. My hardware error rate is at about 7%

The 3rd asic slot chip reaches temperatures of around 67.5. Maybe there is a hardware shutdown temperature it it goes a little higher than that? I put a case fan on it and it runs cooler. I'll see if that was the problem

I suggest, if you're running with the top off, cut a piece of cardboard the width of a front fan, about 5.75" wide, and high enough to abut the front of a front or both front ASIC module(s) and reach under the lip of the top front of the miner, and put it aside. When the hashrate crashes down, try putting the cardboard between the two front fans so the outside halves are pushing air into the box but the center halves are pushing air down onto the BBB. I think it's the BBB heating that causes the drop after hours of otherwise good hashing. If I'm right, when you put the cardboard in place, you can watch the first figure in the cgminer hashrate, that you can view ssh'ing in using putty, immediately rise up. If I'm wrong it won't.