Facing TV Problems? Ask a TV Technician.
Hi and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, bear with us; re-confirm and post back with the complete model number of the Samsung. Have you ytird unplugging for an extended period of time ?
Longer please; even overnight. The idea is to simulate a soft RESET which would serve as both an attempt of a fix if it were a glitch and as a test if it were an internal hardware issue.
And the model number when able.