Solved! HDMI splitter setup works with all devices except Blu-Ray player. How can I fix this?

Mar 2, 2020
I have four devices (cable box, xbox one, xbox 360, and blu-ray player) running into a 4-to-1 HDMI switcher. All the devices work fine, except I can't get a signal from the Blu-Ray Player. (It's an older model Panasonic). When I plug the Blu-Ray player directly into the TV, it works fine, but I'd like to use it with the HDMI switcher. Anything I can do?