I used my new etrac (my second one) for about 4 hours the very next day after I got it. Worked fine. Didn't use again until I received my X-5 coil yesterday evening. I went out in the yard and turned the machine on and then the backlight. I was hunting around trying to get the feel of the new coil and all systems were go. After about 15 minutes of use, my etrac went blank and the backlight went out as well. I powered the etrac back up everything seemed fine except it had reset back to all default settings. I then proceeded to turn the backlight back on. That was a no go. I tried again and the machine shut down again. Turned etrac back on and again tried the light and the machine shut down. It seems the backlight is overloading the machine. I'll use it anyway just without the lite and maybe something else will go wrong with it and then I'll send it in for repair. Oh well. Myo other machine has been flawless (knock on wood) and has several hours on it.