The Problem Try this!Flickering and DimmingIf your Samsung Television is flickering or dimming sporadically, you may needto disable some of the energy efficiency features. Disable Energy Saving (System> Eco Solution > Energy Saving) or Eco Sensor (System > Eco Solution > EcoSensor).ComponentConnections/ScreenColourIf the colour on your Samsung television screen is not correct or the black andwhite colours are off, run Picture Test (Support > Self Diagnosis > Picture Test).If the test results indicate that the problem is not caused by the TV, do thefollowing:● Confirm that the TV's video input connectors are connected to the correctexternal device video output connectors.● Check the other connections as well. If the TV is connected to an externaldevice via a component cable, confirm that the Pb, Pr, and Y jacks are pluggedinto their proper connectors.Screen BrightnessIf the colours on your Samsung TV are correct but just a little too dark or bright,try adjusting the following settings first.● Go to the Picture menu and adjust the Backlight, Contrast, Brightness,Sharpness, Colour, and Tint (G/R) settings.Unwanted PoweringOffIf your Samsung TV appears to turn off by itself, try disabling some of the TV'senergy efficiency features. See if Sleep Timer (System > Time > Sleep Timer) hasbeen enabled. The Sleep Timer automatically turns the TV off after a specifiedperiod of time. If the Sleep Timer has not been enabled, see if No Signal PowerOff (System > Eco Solution > No Signal Power Off) or Auto Power Off (System >Eco Solution > Auto Power Off) has been enabled and disable them.Problems Powering OnWhen the TV is turned on, the remote control receiver flashes 5 times before thescreen turns on.If you are having problems powering on your Samsung television, there are anumber of things to check before calling the service department. Confirm that theTV's power cord is connected correctly at both ends and that the remote controlis operating normally. Make sure that the antenna cable or cable TV cable is firmlyconnected. If you have a cable/satellite box confirm that it is plugged in andturned on.Unable to find aChannelLaunch Setup (System > Setup) or Auto Tuning (Broadcasting > Auto Tuning).If your TV is not connected to a cable box or satellite box, run Setup (System >Setup) or Auto Tuning (Broadcasting > Auto Tuning).The TV image does notlook as good as it didin the store.Store displays are all tuned to digital, HD (high definition) channels.If you have an analogue cable/set top box, upgrade to a digital set top box. UseHDMI or Component cables to deliver HD (high definition) picture quality.Many HD channels are upscaled from SD (Standard Definition) content. Look for achannel that is broadcasting true HD content.● Cable/Satellite Subscribers: Try HD channels from the channel lineup.● Terrestrial/Cable Aerial Connection: Try HD channels after running the AutoTuning function.Adjust the cable/satellite box's video output resolution to 1080i or 720p.