Casio G-Shock GW-M5600

This is not something that very often comes into the workshop... a G-Shock that actually is broken! The module was dead and a battery change and reset still didn't bring it back to life.

The resin bezel itself was still in fairly good condition and so could be cleaned up and re-used.

The module needed to be removed and completely disassembled.

The circuit board was very carefully inspected and cleaned by hand. Any corrosion was removed from the surface of the contacts.

Upon removing the protective resin bezel, it became clear that this G-Shock had been used as intended by Casio... hard! The amount of accumulated dirt was surprising...

What did become clear was that the accumulated dirt around the buttons had eventually managed to penetrate the double o-ring gaskets used on G-Shocks. Some water had entered the case and had caused the module to stop functioning.

As you can see, the water and dirt had caused corrosion on the circuit board. This could cause the circuit to short out and the module to be unresponsive.

After re-assembly, the watch performed brilliantly. As this is a solar and atomic model, a special rechargeable battery was fitted and all functions tested. You can never keep a good G-Shock down!