Cisco - Port security for 500+ Devices?

Hi and thanks for reading.

I'm an IT manger/Sysadmin at a site trying to figure out how to deal with an operational problem. CCNA, but by no means an networking expert.

It's a hotel, and we have 500+ TVs running on CAT6. Due to PCI, we need port security on the lanports that TVs are plugging into. The orginal "solution" was to set the ports to sticky-MAC. This sort of works, however when the the maintenance guys replace a broken TV, it locks the port because it sees a different MAC address. This creates an operational issues and guest complaints because our networking is outsourced, and the SLA for a downed port is 4 hours. This is a long time for a guest TV to be out of services....

I'd like to create a huge whitelist of all our current TVs, plus all the backups we have sitting in the storage room and use that for port security. I'm not sure if this is possible with this many devices.

Any other suggestions?

Thanks in advance...