Ctgallo,

If no other input works, unfortunately, that sounds like it may be an issue with one of the boards or input connections, and this would require service. You can schedule a technician to inspect your unit by filling out the information below:

http://www.samsung.com/us/support/online/supportOnlineServiceRequest.do

Typically, this issue isn't a result of a bad panel, but a technician would have to take a look to determine properly.

--HDTech