Hisense N3000 - Troubleshooting Common Issues; No Sound or Picture; Picture and Sound Problems; Other Display and Sound Issues

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SYMPTOMS POSSIBLE SOLUTIONS
No sound or picture.
Check if the power cord is plugged into a powered AC outlet.
Press the [Power] button on the remote control to activate the
unit from ‘Standby’ mode.
Check to see if LED light is on. If illuminated, power to TV is OK.
I have connected an external source
to my TV and I get no picture and/or
sound.
Check for the correct output connection on the external source
and for the correct input connection on the TV.
Make sure you have made the correct selection for the input
mode for the incoming signal.
When I turn on my television, there
is a few second delay before the
picture appears. Is this normal?
Yes, this is normal. That is the TV searching for previous setting
information and initializing the TV.
Picture is normal, but no sound.
Check the volume settings.
Check if ‘Mute’ mode is set on.
Sound but no picture or black and
white picture.
If the picture is black and white, unplug the TV from the AC outlet
and replug it after 60 seconds.
Check that the Color is set to 50 or higher.
Try different TV channels.
Sound and picture distorted or
appear wavy.
An electrical appliance may be affecting TV set. Turn off any
appliances, if interference goes away, move appliance farther
away from TV.
Insert the power plug of the TV set into another power outlet.
Sound and picture is blurry or cuts
out momentarily.
If using an external antenna, check the direction, position and
connection of the antenna.
Adjust the direction of your antenna or reset or fine tune the
channel.
Horizontal/vertical stripe on picture
or picture is shaking.
Check if there is interfering source nearby, such as appliance or
electric tool.
Other Information
Troubleshooting
If the TV does not operate as usual or appears to be faulty please read carefully this section. Many operational
issues can be resolved by users.
It is also advisable to unplug the TV form the AC socket on the wall for 60 seconds or more, then reconnect
and start again. This simple procedure helps in restoring stable conditions for electric circuits and firmware of
the unit.
Please contact Manufacturer Customer Care if the problem is unresolved or you have other concerns.