Overhead Door brand unit stops going down
I have an Overhead Door Brand Model 551, 1/2 hp unit, pulling a heavy 2 car door. It's probably 8-9 years old. When it starts down, it goes about 2 feet and then reverses. If we hit the remote control at that magic point it stops and then we hit the RC again and it goes all the way down. It seems to be worse in colder temps. The light safety sensors are adjusted properly and the sensitivity control is set to the minimum sensitivity, but it does the same thing at all sensitivity settings. Is it fixable or dying and ready for a replacement?