After Tesla replaced my switchpack under warranty the JVC KD-NX5000 head unit display changes intermittently to green or blue. The video cable may be loose. Before I take it back and lose my car again for a few days I would like to pop out the head unit from the cage and reseat the cables. Do I need special keys to remove the unit or can I use any thin piece of metal? Also, do I need to remove the thin plastic frame around the front of the cage? Would appreciate advice from anyone who has done this before, Thanks!