HP MediaSmart SL4782N Guía Del Usario página 129

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.
If the Power light on the TV is on (blue), press the Power button on
the TV.
Is the AC power cord disconnected? Make sure both ends of the
power cord are plugged in.
Is there power coming from the outlet? Plug a functional lamp or
other electrical device into the same outlet as the TV to make sure
power is coming from the outlet.
If you are using a power strip, make sure it is turned on.
External influences such as lightning and static electricity may cause
improper operation. In this case, operate the unit after first turning on
the power for the TV, or after unplugging the AC power cord and
plugging it back in after 1 or 2 minutes.
Adjust the picture tone.
Is the room too bright? The picture may look dark in a room that is
too bright.
Check the input signal setting.
If you are watching a component device, make sure the red, blue,
and green cables are fully inserted into the proper connectors at
both ends.
Is the sleep timer set?
The internal temperature of the TV has increased. Remove any
objects that are blocking the vent, or clean the vent.