follow this steps and fix it. Use the digital or cell for to see the LED ON when you hit any keys.otherwise open and clean it.
God bless you
The batteries are dead.
Replace the batteries.
There is something blocking the receptor on the main unit.
Remove any obstructions and clean the area in front of the
The remote is too far from the receiver or at too extreme
of an angle.
Move closer to the receiver (within 23 feet) or change the
angle (within 30 degrees) to the receiver.
A fluorescent or other bright light is shining on the
receptor on the main unit.
Turn off the light or shield the receptor.
The device has a keylock or lockout feature turned on.
Check the display for a key or lock symbol, then follow
the instructions in the device's user manual to turn off the keylock or
Either the remote or the receptor on the device is not
Use an Intraed Sensor
to see if the remote is sending a signal.
If the remote is sending a signal, it used to control that
device, and no other solution works, you should have a service center look at
the device and remote to determine the problem and if it can be fixed.
If the remote is not sending a signal and you have
replaced the batteries, you will need to repair or replace the remote,
depending on cost.