Ok, my S9 start working a bit better.
https://s32.postimg.org/53zy2xn91/s9_625_Mhz.pngMost important thing was set fan manualy at 90%. After this at 650Mhz get 13TH+ but with quite a lot HW errors (0,0015%). After lower frequency to 625Mh HW drop to 0.0003% and speed stabilized at 13,1TH.
Strange thing is that miner need few restarts to hashig properly, sometimes 1 board hang at 3TH and dont want speed up.
those chips temps are wayyyy too high my friend. your running some dangerous numbers. they should never go much higher than 70 degrees c at the chip and each day it runs like that it loses a little more life until it finally dies. if posible i would try fixing this sooner rather than later. i dont want your hardware throwin out that magic smoke.
