Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ "chain move won" Questions

...CHAIN OF ITS TENSION, BUT IT WON'T MOVE, ANY SUGGESTIONS Release the door from the opener by pulling down on the rope. It will be very hard to pull. This should release the tension on the chain ...

chain will not move door where are adjustment screws? I think that may be the problem Does it make a noise? Did it run before you changed the springs? Did you replace springs on opener or on the door?

...won't go up. Motor runs like it should, nothing moves. I also unhooked the door bracket. What might be the problem? There are nylon gears inside the opener that drive the shaft the chain turns on ...

...chain or latch is not moving. Other than reversing for just a brief moment at the end of travel at no time should the motor hum as turning and the latch feature not move. What I suspect is happening ...