Yes you can do it but you might not like the results after.
i have a tv
ALL TV’S COME WITH A WARNING NOT TO PUT IT NEAR A HEAT SOURCE. EVEN WITH OUT THAT, IT DOESN’T SOUND LIKE A GOOD IDEA.
ANOTHER THING TO CONSIDER IS THE BEST VIEWING POSITION IS EYE LEVEL. UNLESS YOU PLAN ON STANDING IN FRONT OF YOUR FIREPLACE TO WATCH IT, YOUR GONNA END UP WITH A CRICK IN YOU NECK!
The fireplace will help.
The heat dont convince you perhaps the heat dont convince you perhaps the heat dont convince.