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- Have you tried to put new batteries in remote?
- Also, have you tried the remote closer to TV, I mean from 2 feet distance etc?
OK, can you operate the TV through control buttons on TV itself?
Is there any other Samsung TV to try this remote on it or another Samsung remote available to try it on this TV as a test?
OK, how the TV gets channel signals, is it connected to aerial for local channels OR any satellite box hooked to TV and do you use Samsung remote to change the channels?
Sorry about delayed reply, had an issue with my internet connection.
Please check following link to view control knob on TV located at lower rear corner of right side..
Does this knob work to change channel or turn TV On-Off while TV freezes?
OK, so the problem isn't specifically related to remote as control knob also doesn't work to correct the issue.
Unfortunately it seems main board of TV is failing and causing the problem, main board has main controller/ video processor chip which has got internal failure that is why TV gets stuck/ freezes after some time and rebooting the TV fix the issue temporarily. I'm afraid you would need to replace main board of TV to resolve the problem as it is hardware related issue and there is no reset/ push button solution.
If you're working on this TV yourself then need to remove back cover of TV after removing screws around the back panel then find a label on main board for part number that can be used to search/ google to get replacement main board price info to order it. Board replacement is easy, sort of plug and play type work. I hope these info will help. If you have any additional questions, feel free to ask. If you're satisfied, please rate me a 5-star at the top of your page. Thank you.