One of my S3 temperature shows as 0 (for both chain 1, 2). How do I resolve this?
I tried to restart, reboot and nothing helped.
Have a look inside the ant miner see if the sensor is actually connected to the board or try removing and re applying it. Make sure unit is turned off when doing this. If it is then you could try firmware update flash with image then reset to see if it comes on if it don't then this looks more of a faulty sensor if none of the above resolves the problem then looks like possible rma.
what does it look like?
is part of the module un plug the fan and place in the other one ie reverse it and see if the temperature shows on the other controller instead. if this does not work then it will be controller and am not sure where the actual temp sensor is no doubt some tiny thing sitting under the heat sync somewhere but cant actually see. Avalon had a wire sensor you can replace and I did exactly that on my avalon.
Antminer on the other hand think its part of the unit built into it. only option try flipping the fan to the other end and flip around see if that sensor works on that one if it don't then it. However having said that this is the S3 I would need to see it in parts to see where the sensor is on it maybe someone already had one in bits and broke down. if looking at one inside with the tiny heat plates then could be under one of them or its built in.
If built in on a tiny resistor sort of thing then you only have 2 options 1 is flashing firmware seeing if that will work or 2 living with it and contacting bitmain about it for poss RMA or some sort of guidance on where location of it is and seeing if damaged.