I've had my tuner for a little over a year. i had it installed and occasionally it just didn't work. it was installed so i couldn't see if it was getting power but just assumed that a wire was loose somewhere. eventually i had it pulled out and now i just installed it myself. it worked right away but mysteriously stopped working a day or two later. i pulled everything out (without unplugging anything) and turned it on. it worked so i put everything back in and it didn't work. i again assumed some wire was lose or getting pulled out. i pulled everything out again and now it still doesn't work. the red light is on and the dial is set to 0.
3 questions:
what is the dial for?
what is the little hole (looks like a dc power plug) between the cable pack coming out and the antenna lead
what else can i do to troubleshoot the tuner?
thanks!