Resistors burn out over time, just like lights. Quite frankly, it's very hard to buy the proper size resistor needed for hyper-flash. So, not having the correct size resistor just makes the problem worse.

Everyone is selling 50 watt 6 Ohm load resistors to fix hyper-flash but they are just too darn small! They get really hot after just a couple minutes. (Yes, load resistors are made to get hot but there is a temperature range though.) We need, at least, legit 100 Watt 6 Ohm load resistors but they are pretty hard to find. When I do find some, they are often re-labeled 50 Watt 6 Ohm size. Also, you need to add a load resistor to EACH turn signal light that is upgraded to LED. I've seen all sorts of stuff done to trick a vehicle's system to fix hyper-flashing but this is the only proper way on our newer F-150's.