I am having the same problem with my PSR-500. I have come to the conclusion that there is an issue with the scanner itself, but in my case it is not worth having it sent off for repair (Besides, where do I send it?). I charge my batteries in an external charger, then operate the scanner with these. My PSR-500 will also not operate or charge whenever I use either the OEM charger or the car charger which is new. It is frustrating as I at one time always took my PSR-500 with me whenever I left my home. BTW, if anyone has any ideas as to where I can have my PSR-500 repaired please "speak up". There is still plenty to listen to here in Hinesville, GA.