I just acquired a 15-2116 from my local RS store. I am finding that it emits a low buzz for about 5 seconds everytime I press any button. It is not loud but definitely noticeable.
My 2117 does the same thing, and it is indeed tied to the backlight. Is there a way to turn off the behavior where the backlight comes on when any key is pressed? I don't see that feature in the manual.
On my 15-2116, the backlight button (located next to the program/setup button) is a toggle - press it to turn the backlight on, press again to turn it off. I believe the 15-2116 and the 15-2117 are essentially the same remote, so try toggling the backlight button to turn it off.
Please read the following: Unsolicited commercial advertisements are absolutely not permitted on this forum. Other private buy & sell messages should be posted to our Marketplace. For information on how to advertise your service or product click here. Remote Central reserves the right to remove or modify any post that is deemed inappropriate.