How to Troubleshoot Samsumg LED TV Problems
Samsung LED TVs come with a variety of inputs, making it possible for you to connect a number of different devices to your TV. Samsung LED TVs also offer picture-in-picture functionality, the ability for you to connect the Internet and install apps directly on the TV and in some cases 3D. If you start experiencing problems with you TVs display or audio, troubleshoot the problems on your own before taking the TV in for professional repairs.
Dotted Line on Edge of Screen
Press the "MENU" button on the remote control that came with your Samsung LED TV.
Select "Picture," then press "Enter."
Select "Screen Adjustment," then press "Enter."
Select "Picture Size," then press "Enter."
Select "16:9," then press "EXIT" on the remote control to save your changes. The dotted lines on the edges of the screen will no longer appear.
No Over-the-Air Channels Detected
Press "MENU" on the remote control.
Select "Channel," then press "ENTER."
Select "Auto Program," then press "ENTER."
Select "Auto," then press "ENTER."
Select "STD," then press "ENTER." The TV begins searching for available channels.
Repeat steps one through five two more times if the TV is still not detecting any channels. However, instead of selecting "STD" in step five, select "HRC" the second time through and "IRC" the third time through. If you are still not detecting any available channels, check to ensure your antenna, if you are using one, is firmly connected to your TV.
Purple and Green Bars, Buzzing Noise from TV Using Component Cables
Disconnect the red and white audio cables connected to the component input that corresponds with the source device you are watching where the purple and green bars appears on the screen and a buzzing noise is coming from the built-in TV speakers. If the buzzing noise stops coming from the TV speakers, the source device is not properly grounded.
Disconnect all of the component cables from the source device and from the Samsung TV.
Connect an HDMI cable to the source device, as this is the only type of cable you will be able to connect to the Samsung that carries audio that won't result in a buzzing noise coming from the speakers and the green and purple bars on the screen.
Connect the other end of the HDMI cable to an available HDMI input on the Samsung TV and press the "SOURCE" button on the remote control to change to display the HDMI input on the TV screen.