Chosen Solution

what is wrong with this nice playing set sylvania srt2777x?

kdreumel since you’ve already tried new remotes, the issue here can be the IR receiver board. Remove the back of your set and take some pictures of all of your boards and how they are laid out in the back of the set. Post those with your question so we can see what you see. Use this guide Adding images to an existing question for that. If this is a CRT TV you do not want to touch anything on the inside.