Here is an easy way to check the remote to determine if it is working.
Using your cell phone camera, look at the I/R Transmitter.
When you push any of the buttons on the Remote Control, you should see the transmitter begin blinking.
If it does not, change the batteries and try the procedure again.
NOTE: THIS METHOD MAY NOT WORK ON ALL PHONES. THE IPHONE IS NOT AS SENSITIVE TO IR LIGHT. FOR BEST RESULTS ATTEMPT THIS TEST IN A VERY DARK AREA. First check a known good remote to make sure your camera can display the IR light.