G'day all, hoping someone can help? 2011 lr4 hse, just bought it a few weeks ago and knew it wasn't functioning. Car yard had changed the amplifier which obviously didn't fix the problem, so I done some research and checked the fuses. After pulling the fuses 64 65 66 67 and 68 checking them then putting them back the touch screen came on and the radio worked along with the camera. Next morning it was blank again and nothing will work. After checking the amplifier power with a power probe finding it was getting full power I then went to check the fuse and found fuses 67 rear entertainment module and 68 touch screen display, multimedia module, radio telephone were going to ground! 64 65 66 all getting full power.
Has anyone come across this with these fuses before? Or has anyone have any ideas where i should start looking to find why these two are grounded?

Any suggestions are much appreciated