Hi, I noticed one channel was missing when testing a turntable. On checking various points for connectivity it appears that the left and right signal inputs on my Angle Audio phono stage are connected. ( I tested this by sticking a small metal rod in each input phono socket and using a multimeter, I also took the lid off and tested the terminals inside the box - everything disconnected and power off of course). This would be a very unusual fault in my experience, but would it explain the loss of channel?