While some rear projection televisions have the remote control sensor (IR sensor) located on the front panel of the TV like most other televisions, some models (Mitsubishi WD models) have the sensor located inside the cavity of the TV. These models are not compatible with the LT. To determine whether your model is compatible or not, consult your Television's Owners Manual. If the manual does not display the remote sensor location, try contacting the manufacturer's tech support department.