So bit of a weird story.

I got an Antminer S5, factory reset it, connected it to a gold 605W PSU and pool and was mining at 350 hz, 1150 GHz and everything was working for around 12 hours at 60 degrees. Before I shut it down I changed the hz to 150 to see if it quieted the fan and shut it down.

I bought a new fan, removed the stock fan and tried to connect the 120mm new fan. The 4 pic connector was slightly different on the back and it wouldn’t fit the plug. I put the stock fan back on and powered up the machine.

Since then the only lights on the miner are 3 green and 1 red on the control board. There are no lights on the blades and I can’t connect to the IP anymore. The 2 lights in the Ethernet cable are on but not the green or red lights on the right of the Ethernet.

I have tried everything to connect, it won’t factory reset and nothing I do changes the power up sequence. The fan turns on and there are just the 1 red light and 3 green lights in a row on the control board. The Ethernet cable is connected and it works on other computers. I can see everything connected to my router but the antminer has disappeared. It seems like it is not powering up at all.

Please help.

By the way - the address lines tie directly into the temp sensors (LM75 I believe) so the controller can tell which board has which temperature. PLUG tells the controller a board is attached, but I forget if it pulls high or pulls low. Been a couple years since I needed to know that, but I've got notes on it at the shop. Everything else should go straight across.

you need a long cable, conect the board to the api board , and you will need a old s5 fimrware i think it is the first whit fan control..