To update this post, all was good with the garage door opening after finding out about the problems that some CFL and LED bulbs causing problems. As soon as my girlfriends son plugged in a light fixture into the garage electrical circuit, the issue popped up all over again.
So I assumed that the RFI was transmitted in the air so to speak, and didn't think that it could travel down the electrical circuit and cause the problem. Once we unplug the lights fixture in question, the range from the door opener returns.
What best practices have others used to determine a problem CFL or LED unit that causes RFI and is there a device that can clean the electrical circuit (plug in filter, surge suppressor, etc.?)
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