How to make sound test or Picture test ( Webos )
-when you see some problems in sound or image like lines appear on the picture or the sound purity and other problems, some models have a "picture and sound test" to certify that a malfunction from the device or from the connected devices.
press the (Setting) key of the TV remote.
1. For Picture Test, Select "Picture" from menu & Shoose " Picture Test ".
2- For Sound Test, Select "Sound" from Menu & Shoose " Sound Test ".
-The following picture shows, will be appear, make sure that a malfunction or not in the TV Picture.