Passport 8500 Radar Detector "wont start" Questions

cobra xrs9740 wont set up. pressing the buttons does nothing I can change from City to Highway,thats all that it will do. Cant set the compass or dim the screen try.unplugging it and starting over, ...

as soon as unit powers up and finishes reboot or whatever ,it starts a x band alert and wont stop .tried every thing i could think of to reset it.dont know what x band represents but if anyone has ...

...will go off my detector also goes off flashing laser for no apparent reason and once is starts it wont quit going off intermediately for a entire trip whether i travel 5 miles or 300 miles....very ...

...it wasnt picking up a stray signal from something in my truck. Same thing, randomly goes off and wont stop until you power it down and turn it back on. HELP! I have the same problem. My detetor is ...

...wont power up and the plug in car works the fuses are fine everything works but when i turn on for power to start the valentine One I here nothing no sound no lights. What do u think it my be. I also ...

My XTR 550 picks up a laser and starts signaling but wont stop even after I have driven pass the source. I have to shut the unit off and when I turn it back on it keeps doing the same thing at random ...

...wont rev up it gets hot and dies won't start back until cools down Could be your timing has jumped enuff for it to still run but too much for computer to compensate! Just a thought! had this happen n ...