MANOS75

i have 07 r350 with the rear dvd entertainment system, the one with the screens in the headrest and the comtrol unit under the center console in between the seats, it started freezing up on me so i took it to dealer and he said its not covered under cpo, which cane to shock to me, but he saud it would cost 2800 to replace the control unit, was wondering if anyone knows of where and if i can find a rebuilt one or if i can send somewhere to get it repaired, please let me know 2 year old twins will thank you