I have starnge problem with hashing board.
When antminer starts with that board red light on board is active,temperature rising to 52C and all chips (45) are active (ooooo ooooo ...)
On hashing speed and awerage speed are shown 0 (no hashing) and only shows local work (rising)
Temp is 51-52 (board is hot)
Chips are active
But no hashing!
What can be problem? (power supply is ok because work on other board fine)

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One my hashing board stop working.
On that malifuncional boad in sistem tray of miner two board got normal temperature and are show 45 chips active. And hash rate is good.
On bad board show only 40 chips active and has always temperature 35c. (and got less ooooooo) -No hashing

I change cable and power supply from working boards and all is the same.
Did are bad chips on board? (But if is that why not showing xxxxx in system tray?)

Please help