More repairs

Just recently I've had to take apart the sound system, the back door lock and now the front door bell. The bell developed a problem earlier this week - as I was sitting working on the computer, it started ringing continuously. Disconnecting the bell push and then replacing the batteries did not help, so I had to completely disable it. Anyway, today I got round to taking it to pieces, and I HOPE I have fixed the problem! As the density (or lack of it) of the components indicates, and the several discrete components, it is over 30 years old, so I suppose that if I do end up having to replace it I can't complain.