Hi, I have a friend with 2.7 year old Blinder M40. Countless saves. Until recently. It didn't go off or flash the in-car LED when shot by a LEO. 100% he was being shot at because he was the only car in view and RD went off.
So recently, before that LEO encounter, his jammers started "whistling" ,as in cutting in and out on the alert sound.. like a lower voltage than it normally would. Sounds like water boiling. We figured it still worked because it worked at Laser red light cameras.
Has anyone heard of this problem? As to why it's "whistling?" I tried searching.. but not sure how others would word it! It shows a green light and makes the 30 second ready beep. That means all heads are working, correct?