Greetings, I owned this CB new for about 3 months then I accidentally let the battery drain on my Jeep when I left my interior light on. The radio was off but made a clicking noise from the speaker, I unplugged the radio and plugged it back in but it will not turn on. Fast forward several months, I am trying to figure out what is wrong. I have the wiring, and solder diagrams. Access to a soldering iron, solder and digital multimeter. I replaced the diode between C123 and C124. I tested the original diode and it is working great with no continuity. I tested all the components before the switch and they seem to be good. When I remove the yellow wire from L201 from the back side of the plug connector, the back of the + and - plug terminals read 12v. As soon as I touch the yellow wire back to the positive terminal I get a reading of 2.75v I checked the red wire at the switch and that is also 2.75v. If I remember correct the orange wire at the switch was 1.3v. My guess this is some kind of voltage regulator issue. My problem is the electrical diagrams are not a detailed as automotive diagrams. For example I had to look at the solder diagram, electrical diagram and the CB itself to figure out from T2 the power goes to the Black W20SW wire that is soldered on another board that makes contact to a Red wire that goes to the power switch. The Cobra diagram shows a connection from T2 to the switch. Is there an electrical diagram out there that is more clear? Also does anyone have any ideas to help me out?