electrical switch and outlet issue
If I understand you right, you’re using a light and TV on a dimmer switch controlled Plug (outlet) 

If so that is a extremely bad idea as this is totally unsuited for TVs, Stereos, Computers, and other equipment. Equipment of this type will likely kill the electronic switch (triac) inside the dimmer switch and will put the attached appliances into a condition where they are likely to be destroyed when the dimmer is set at anything less than 100% on.

Solutions:


Put TV on different non controlled outlet (You will still have to replace the defective Dimmer switch)
You can if you want to keep the on off switch, remove the dimmer and put a regular light wall switch
The best would be to remove the Dimmer/light switch all together (After shutting power off from Breaker) and connect the switching wires together(NOT THE GROUNG)and cap, Then put a blank wall plate on.