I replaced the batteries on my Timex ironman recently. Everything works, but it won't chime. I use the alarm and timer a lot, and would like to get it working again.
Okay you changed the batteries, but check them, I have some out of a pack of batteries duff. Usually ok if you have bought decent make, but worth checking anyway, especially if all ok before.
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Try fixfault.com to fix wrist watches.