My friend gave me a LEM Procon 750 to take a look at because only one of the channels is working. I'm no electronics genius but I'm handy enough at repairs. I can't seem to find what is wrong. All 4 fuses are fine (tested with multimeter) and all the components look fine to me. I've attached some pics and circled two things that look a little off to me. If you think you can help let me know