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I have a Linear garage door opener Mdl LD050. I had to replace the drive sprocket that pulls the chain that opens door. keep in mind that its is in a rental house. Any way after replacing sprocket opener runs as soon as it is powered up. and does not stop at limit switch. just keeps going. Does this sound like a control board issue? the opener is 10 yrs old and a new board is 50 bucks. Thanks for any ideas
