Hisence model 58A6100UW

@joshua49307 3 blinks on a Hisense is commonly used for a failed backlight. Remove the back cover from your TV and take a look at the boards. Check for any obvious damage. Also check to see if your backlight flashes on when you reapply the power and try to turn it on. It is possible that your power supply has a error detect circuit that possibly could be bypassed to see if your TV would turn on. For that we will need to see all of your circuit boards. So, once you have the back cover removed, take some good pictures of your boards and post those with your Question. That way we can see what you see Adding images to an existing question