Hi, Ive got a 17.56.2 touring for a few years now, bought new. We have never used the antenna, last trip we tried to set it up but could not get any reception, been trouble shooting since coming home and found a short on the cable running from the TV antenna input outside of the van running to the splitter, changed the connection on the splitter end but still no luck. Need to access the back of the TV antenna input thats on the outside of the van. Does anyone know how to remove or get into the paneling? Attached photo which is under the table. Cheers