Samsung SyncMaster LD220HD User Manual page 58

The remote control buttons do not respond.
You may see small particles if you look closely at
the edge of the bezel surrounding the screen.
5-2
PROBLEMS RELATED TO REMOTE CONTROL
Check the battery polarities (+/-).
Check if the batteries have been exhausted.
Check if the power is on.
Check if the power cord is securely connected.
Check if a special fluorescent or neon lamp is on in the vicinity
NOTE ON THE PRODUCT APPEARANCE
This is part of the product's design and is not a defect.
Troubleshooting