Quote from: Raoreef on July 10, 2017, 09:37:40 PM

Hi guys I just open a S9 for maintenance, I just brus the dust from the cards with a soft paint brush and put it back togheater. I do this once Every two months or so. So far with no problems, this time one S9 displayed this massege Socket connect failed: Connection refused. An two of the hashing boards wont work.

I've tryed intalling every posible firmware available even old ones I found in this forum and nothing. Can any budy help me?

Thaks

s9 are famous to break down even if disconnected from internet,one or two boards can go off easily because of that
you should take pictures of your boards and the pic of the miner's display when working for people to be able to help you
the most likely reason is your boards controllers or the boards went poof,or you haven't connected things properly