Garage door opener stops suddenly when opening and closing
I've had my Craftsman Garage Door Opener model 13953985 installed for the past 7 years and it has operated perfectly up until recently. The door will stop during travel, in either direction, at no set interval. It will stop part way opening or closing, and I will have to keep pressing the bottom several times until I can get it to travel a complete up or down cycle. The safety sensors are properly aligned and the show the correct amber & green lights. The lights on the main unit DO NOT flash when the door travel is stops (unlike when the safety sensors detect something). The problem occurs with ALL of the controllers (wired opener, wireless keypad, 2 remote controllers). The problem occurs intermittently, but seems to be happening more frequently, almost every day.
There is nothing impeding the travel of the door and it is well-lubricated/maintained. I have adjusted the open & closing force, they are both now set to maximum. The door travel up/down is set correctly, and I've removed any excessive slack in the chain.
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