Hi,
I just purchased a second hand Dragonmint. I have 2 weeks to test it and return it or keep it.

I used a lot of Antminer before, this is my first Dragonmint.

I'm running it since yesterday. The hashrate is pretty good and I can use the autotune to make it less hot.

https://i.imgur.com/bP4adaS.png

My question is after 8 hours of usage there is a looot of HW, and some rejected share. I know with Antminer it's for hardware fault and I guess it's the same here.

Do you think I must worry about it ?

By the way, I read that the max temperature must be 75°C, should I worry too if just after start it the first time it was to 78° ?

Thank you for any advice !

AW