System will not power on and drains battery. Navigation CD is in unit. What is causing this to happen
SOURCE: How do you remove DVD stuck in navigation system
If you remove the unit from the dash the top, take off the top cover, no screws you can acess the CD slot. Remove the 4 screws holding the CD player in place and the ribbon cable and you should be able to remove the CD from the slot.
SOURCE: RB4 problem
You have a problem on the NAV PCB.
Here at Hunt Automotive Electronics we are the only authorized repair center for the Harman RB4 chry Nav radio.I have run across many RB$ units with this problem.
SOURCE: probleme with rb4 and dvd
The only reason the DVD will not function with the RB4 is if the DVD unit is not talking on the BUS. The RB4 will work with the factory DVD single disc/or DVD changer.Make sure that the BUS is connected to the DVD unit and the Van thru the 22 pin and 10 pin connectors on the back of the radio.
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