hi, ive had this problem with my atari 2600 Jr for months now where the red light turns on but it wont output any audio or video, its not modded to my knowledge, but the seller i bought it from did say it was region free so it might be modded. Anyway, ive tried loads of different methods like changing all the channels and tuning them all, opening it up and slowly rotating the small white circle but that didnt help either, any help would be appriciated!