Dots are twinkling.
Do you detect dots on some part of thedisplay or they are flickering?
1. If picture test or USB function isavailable, try the function and check if the same symptom appears on the samelocation again.
2. If the symptom is detected only whenset-top box or external device is connected, check the device.
3. If the symptom is detected only atcertain channel or program, this might be caused by the condition ofproduction, sending condition of the broadcasting station.