So I cleaned out my L7 on Mon after stripping it down. One of the first things I noticed was the power cable between psu and control board had the pvc covering the copper wire had started developing a groove into the pvc. I don’t know if this is an issue on other Bitmain miners that come complete with psu’s, so I thought I’d alert those on here with L7’s and maybe other Bitmain miners.
So here is the issue.
And a simple fix wrapping insulation tape around the loom.
I don’t what voltage is supplied by this wire, but it could certainly make the psu short out if it’s carrying voltage.