Having issue with a monitor on a DVR system. We are running from the VGA into an adapter with a BNC output. RG59 with BNC connectors in and then out of a loop through monitor to a 1 to 8 port BNC in, RCA out distributor. From the Distributor there are 2 RG59 runs to tv's that use BNC to F connectors. The monitor that is having intermittent issues has a 50-60ft. RG59 run. The monitor will work for a little while then go out. When we reset the power on the distributor it works, then will loose signal within the hour. Can anyone give me any insight on why this monitor may be having issues? Should we get an amplifier?