My older model Liftmaster 1050 garage door opener won't let me clear the security codes. This model has a yellow learn button with a red LED. Newer models clear codes by holding the learn button down for 6 seconds. I tried holding down the yellow button over one minute but the LED remains lit and the codes were not cleared. My other remote was stolen so I really would like to clear the codes. Thanks in advance for your help.
This was a first generation learn button model. Antiquated by current technology standards. It was a two channel system. One channel for a dip switch remote, the second for a 66LM key pad. No way to erase the programming, however, by programming in a dip switch remote (61LM with the dip switches set to new positions, and a 66lm set to a new entry code) will purge the two channels of their previous memory, now set to the the new settings.
SOURCE: clearing codes on liftmaster garage door opener with yellow learn button
you seem to be doing right thing, hold learn button for 10 seconds, this should clear out all coded items; keypads, remotes.
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