SenorSube, you are a legend! Your wonderful pictures made it all so clear and gave me the courage to try the fix. I went out and bought a soldering iron, pulled the clock apart, heated the solder and Hey presto, my clock works again.
So, thanks from an Aussie Fozzie.
I bought a small roll of solder for a couple of bucks, so I'm guessing I've got enough left to fix another 400 or so clocks
Kerri