The remote for the HiSense Tv was starting to not work properly, especially the back and home buttons. When I took it apart at first nothing looked odd. A bit of dirt. So I cleaned the entire remote including the pcb board with alcohol ISO 91%. It wasn't until I saw all the dirt that had collected on the desk that I realized just how dirty it was. Forgot to take a picture of all the dirt on the desk. Anyhoots after that the remote has been working great. So guess I'll have to give it a good cleaning every 2 or so years.

Here is the remote in all of it's glory lol

Doesn't look too bad here.

Some of the dirt on the front of the remote.