LED not working on UCD180

After about 1 year of use, the led on one of my UCD180 modules stoped working. At first it statred to flicker bright and dim. Then it flickerd on and off. Now it does not light up at all.
This module does not play as loud as the other with the working led. The volume difference is small but noticable.

Anyone know whats up and how to fix it?