JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals. Also view the frequenty asked questions at the bottom of the page for useful tips about your product.

If you find an inaccuracy in our frequently asked questions, please let us know by using our contact form. Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.This partially depends on personal preference, but as a rule of thumb the optimal viewing distance is about 3x the diagonal screen size of the television. One inch equals 2,54 centimeter, so when you measure 99 centimeter, this means your LED television is 39 inches. Then wait 10 minutes, connect the power again to the TV and connecting devices, turn it on and tell me please if it is now operating correctly. Without an instruction manual, tuning a Hitachi television can be a confusing or frustrating process. Can you please remove the power to the TV and any other devices connecting to the TV such as a cable box, wifi router ect (so unplug it from the power socket).

The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. Whether you need to fix, build, create or learn, eHow gives you practical solutions to the problems life throws at you. Measuring the inches on your LED television is done by measuring the diagonal distance between for example the upper left corner and the lower right corner of the screen (not the edge).A few simple programming instructions can be carried out with your remote control, and your Hitachi television will be programmed within minutes. A contrast ratio of for example 400:1 means that the blackest black on screen is 400 times darker than the whitest white. Scroll the different channels on your index using the left and right arrows on your controller, and press the arrow down button to program a channel once it is highlighted.

He has written about a wide range of topics across varying publications, including Demand Studios, wiseGEEK.Repeat the process to tune other desired channels, and press the "Exit" button to leave the menu page once you have finished. With LCD screens this is done by CCFL (cold-cathode fluorescent lamp) and LED makes use of LED lights.