Innosillicon A9 Zmaster Help Please...

[GarySeven]

Although this question may also apply to other miners.

I have several of these running on NiceHash and although the hash rates on all my other rigs are stable I have one rig in which the hash rate vacillates from 20K sols to over a hundred 5 or 10 times a minute and back and forth with the average still being the same as the other rigs at 50K sols. I have them all at the factory settings and noticed it is only the middle board that is doing this as well as running a few degrees hotter (which middle boards will do of course but this one is a bit hotter than the middle boards in the other rigs).

Is it nothing to worry about, or should I consider sending the rig back for a replacement as it is still under warranty from the seller?

*edit... I take that back as I also noticed one of the outer boards doing the same thing.  This was a used unit that was overclocked when I got it and I'm thinking bad boards?

[GarySeven]

No help? Thats OK. At least I found this sub-forum. A mod kicked the post out of the main mining forum to here without so much as a howdy-do and I only found it because I had the OP open in a window.

I'll send the unit back as the wild swings in hash rate have not subsided.,