Hisense 55U78KM User Manual

12
Troubleshooting
If you are having trouble with your TV, first try turning it off and on again. If this does not fix the
problem, check the tips in the following table. If your problem is not listed in the following table,
then contact us at one of the phone numbers on page before.
Issues 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theLEDlightisonornot.Ifitis,thenthe
TV is receiving power.
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 TV, there is a
delay for a few seconds before the
picture appears. Is this normal?
•Yes,thisisnormal.TheTVisinitializingandsearching
for previous setting information.
The picture is normal but there is
no sound
•Checkthevolumesettings.
•Checkif'Mute'modeissetto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.
The sound and/or picture is
distorted or appears wavy
•AnelectricappliancemaybeaffectingtheTV.Turnoff
any appliances that are nearby and move it farther away
from the TV.
•InsertthepowerplugoftheTVsetintoanotherpower
outlet.
The sound and picture is blurry or
cuts out
•Ifusinganexternalantenna,checkthedirection,position
and connection of the antenna.
•Adjustthedirectionofyourantennaorresetornetune
the channel.
A horizontal or vertical stripe
appears on the picture and/or the
picture is shaking
•Checkifthereisanapplianceorelectrictoolnearbythat
is causing interference.
The plastic cabinet makes a
"clicking" type of sound
•The'click'soundcanoccurwhenthetemperatureofthe
television changes. This change causes the television
cabinet to expand or contract, which makes the sound.
This is normal and the TV is OK.
The remote control does not work
•ConrmthatTVstillhaspowerandisoperational.
•Changethebatteriesintheremotecontrol.
•Checkifthebatteriesarecorrectlyinstalled.

Hisense 55U78KM Specifications

General

Brand	Hisense
Model	55U78KM
Category	LED TV
Language	English