HP SL4778N Manual De Instrucciones página 104

Symptom
There is no power.
The unit cannot be operated.
The color is strange, faded, or
misaligned.
The power suddenly turned off.
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HP MediaSmart HDTV User Guide
Remedy (Continued)
Press the Power button on the remote control.
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If the Power light on the TV is on (blue), press the Power button on
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the TV.
Is the AC power cord disconnected? Make sure that both ends of the
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power cord are plugged in.
Is there power coming from the outlet? Plug a functional lamp or
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other electrical device into the same outlet as the TV to make sure that
power is coming from the outlet.
If you are using a power strip, make sure that it is turned on.
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External influences, such as lightning and static electricity, may cause
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improper operation. In this case, operate the unit after first turning on
the power of the TV, or after unplugging the AC power cord and
plugging it back in after 1 or 2 minutes.
Adjust the picture tone.
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Is the room too bright? The picture may look dark in a room that is
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too bright.
Check the input signal setting.
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If you are watching a component device, make sure that the red,
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blue, and green cables are fully inserted into the proper connectors
at both ends.
Is the sleep timer set?
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The internal temperature of the TV has increased. Remove any
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objects that are blocking the vent, or clean the vent.