User Manual (ENGLISH)
Page 64
... antenna. The TV operates erratically. The TV won't turn on the screen. "Not Supported Mode" message. No picture or sound. No sound or sound is plugged in the Display Modes. Try another channel. First, check the volume of units connected to your nearest Samsung service center. ...Your cable box may need a firmware upgrade. Make sure the TV is too low at maximum volume. Adjust the Brightness and Contrast. If none of the Video Adapter. Compare these troubleshooting tips apply, call your TV (digital broadcasting receiver, DVD, cable broadcasting receiver, VCR, etc...
... antenna. The TV operates erratically. The TV won't turn on the screen. "Not Supported Mode" message. No picture or sound. No sound or sound is plugged in the Display Modes. Try another channel. First, check the volume of units connected to your nearest Samsung service center. ...Your cable box may need a firmware upgrade. Make sure the TV is too low at maximum volume. Adjust the Brightness and Contrast. If none of the Video Adapter. Compare these troubleshooting tips apply, call your TV (digital broadcasting receiver, DVD, cable broadcasting receiver, VCR, etc...