Greetings to all colleagues I got this player that was installed on a boat and you can imagine to my surprise and managed to turn on after a large cleaning and welding some components but the display looks very dark it seems that the LEDs are bad and I want to know with that attitude then look for the DEH-3050UB that is similar but the latter has USB and mine if someone could send me the service manual I would appreciate it and it would help me a lot without more Efrain