Hello, my name is Rusty. Normally you won't see a light, unless you point it at your phone's camera feature, then you should see it flash in the LCD of your phone. This is how we test remotes. If it doesn't flash, then you'll need to replace the remote. It's not always the light that goes out, and it's cheaper to replace the remote. Click here.
If it does flash on the screen, please let me know, as that can be a deeper problem.