We recently moved into a house with a pre-existing Chamberlain opener (model #41AC050-1M) with purple learn button. Neither of my remotes (953ESTD or 956EV) will successfully program the door. The LED comes on for 30 seconds but the opener light never flashes nor does the opener click with programming. I tried erasing then re-programming but still doesn't work. Both remotes successfully open door in our other house so I know it's not a battery issue. The wall button successfully opens/closes door, just not the remotes. Finally, thought it was main circuit board so just replaced it with new 41AC050-1M I ordered and received from manufacturer today - same symptoms. Help!
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