@cj_kintz , I did a quick search for a replacement monitor and found one at the link below. You may also want to try a search for a (Uniden Guardian G955 replacement monitor) for better pricing perhaps. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.
http://www.ebay.ca/itm/Uniden-Guardian-G7-7-Monitor-G455-G755-G766-G955-GC45-/282389319161?hash=item41bfb70df9