Samsung LN19D450G1DXZA - Manual (Page 191)

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English
Issues Solutions and Explanations
Software Upgrade
over the network fails.
●
Try Network Settings in the Network menu.
●
If you have latest SW version, SW upgrade will not
proceed.
Others
Purple/green rolling
horizontal bars and
buzzing noise from
the TV speakers with
Component cable
connection.
●
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.