good morning colleagues I got a sound system brand LG, model cm-4360 I turn it on the panel appears close and does not let any function I remove the tray from the computer I turn it on without the tray, it works all the functions normal radio and usb I remove the tray motor, I test it with 6v current, the motor rotates on both sides, I put it back to the tray I test it with current, the tray opens and closes with difficulty, I test the optical lens motor with 6v current, the low voltage to zero volts What dev to do so that the tray does not block the functions and operate the radio and usb