If you re dead set on mounting a tv on a brick fireplace it s a good idea to call an expert.
Drilling brick wall mount.
You re going to need more than your basic masonry bits which will dull quickly and the consensus is that a hammer drill is best for the job.
Get whichever fits your bricks better.
Good options include brick clip on hangers hook hangers or rails.
Both the style that holds the brick and the style that grips the open mortar space.
However if you have old fragile brick and you re mounting a heavy object that requires deep holes and expansion style anchors drilling into the brick may not be the best choice.
The best for hanging items on a brick wall with no drilling and worked best for all growing season support are the brick clips.
To mount a tv on a brick wall without drilling you can consider strong adhesives or a hybrid stand which would allow you to mount a tv on it instead of the wall.
I used the following brick clips to mount on the same wall tied the mounting board to the.
Drilling a hole into a brick wall image credit.
Because of the density of the brick and the difficulty to repair it if you make a mistake take your time when mounting items on a brick wall.