Once more Christmas.... ironically the dining room chime played "We wish you a merry Christmas" all year until last week.... turns out it doesn't believe in the transmitter anymore. It is a non-intuitive combination of actions, thanks so much for posting this.
One doorbell sounder works, one just stopped totally, we can change the tunes and the volume BUT the doorbell button won't activate it no matter how many times we 'pair' it...............
