apologies if this has been covered before.
i have a number of BFL Monarch. they power up and run fine at idle. within 5 minutes of mining the temps at 90C and cut off. any ideas where i should start?
Thanks
Could be several things.
1) Cooling pump is dead so the fluid is not moving.
2) All the coolant leaked out (or was drained)
3) The cooling blocks are not solidly attached to the chips.
If you know someone with PC liquid cooling experience they can usually tell you in a few minutes if it's any of those. And for the most part #1 and #2 they are easily (if not cheaply) fixable. #3 is quick and simple but usually not the issue.
Did you get them used or have you had them since new? Did they ever work?
-Dave