Samsung 8000 Series User Manual page 352

8000 series
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Issues
Others
Purple/green rolling
horizontal bars and buzzing
noise from the TV speakers
with a Component cable
connection.
Plasma TV is
making humming
noise. for PDP TV
Solutions and Explanations
Remove the left and right audio connections from the set-top-box. If the
buzzing stops, this indicates that the set-top-box has a grounding issue.
Replace the Component video cables with an HDMI connection.
Plasma TVs typically make a soft humming sound. This is normal. It's caused
by the electrical charges that are used to create the images on the screen.
If the humming sound is loud, you may have set the brightness on the TV
too high. Try setting the brightness lower.
You can also have loud humming if the back of your Plasma TV is too close
to a wall or other hard surface. Also, try rerouting your connection cables.
An improperly installed wall mount can also create excessive noise.
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