Get a multimeter and test the white connector to the unit under your driver seat. The red wire is power and the black is ground. If you have power there then check the unit for power. Remove the DVD player and check the individual element pins for power. On my unit the second terminal from the right is power and should measure 0.4V. If you have power there too, then it is probably your ribbon cable broken in the hindge or the DVD player itself may be defective. You can plug in a 12V source and check the DVD player outside the car to see if your probably is there.
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Get a multimeter and test the white connector to the unit under your driver seat. The red wire is power and the black is ground. If you have power there then check the unit for power. Remove the DVD player and check the individual element pins for power. On my unit the second terminal from the right is power and should measure 0.4V. If you have power there too, then it is probably your ribbon cable broken in the hindge or the DVD player itself may be defective. You can plug in a 12V source and check the DVD player outside the car to see if your probably is there.