A friend of the family was very upset that her mantel clock had decided to stop and despite changing the battery, it refused to start ticking.
Now, this clock was not an expensive item, but it matched the décor of the room it was in and so the owner was very keen for it to be returned to its place above the fire.
Battery clocks like this are ubiquitous and often, like this one, don’t even carry a makers’ brand logo or name. I was thinking; if the clock’s motor was unsavable, I would replace it using a generic replacement from eBay.
I’ve fixed many battery powered quartz clock motors. They all work in a similar way. An electromagnet which is pulsed using a simple circuit, regulated by a quartz crystal. Add-in some gears and pointer hands and you’ve got yourself a clock.
After removing clock motor from the housing, just two screws, the motor comes apart by peeling back two plastic tangs. Care should be taken not to force anything at this stage as the parts are very small and delicate.
The motor gears and electromagnet out of the way, the printed circuit board popped out and the fault became clear. At some point in the past, I suspect that a battery had leaked just a little and the vapour from the leak had corroded the contacts. A little dab of contact cleaner on an old toothbrush and a little bit of scrubbing and the corrosion was gone.
A little bit of jiggery pokery again and the motor was back together and refitted to the clock’s frame. It just goes to show that something as simple as this can be fixed with basic tools and patience.
Cost of replacement: N/A. Cost of repair: Just 30 minutes tinker time and a cuppa.