20 Most Recent Toshiba 55HT1U LCD TV Questions & Answers

Sounds like main digital board is faulty. There is no start voltage comes out from it to the back-light inverter board to start functioning. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Search the site by type in the "brand name" to your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

what about the transformer and voltage regulators ...Your cables shouldn't be burnt..I would go with the boards.

Check the main digital processor board. If you wish to get more details, check this site linked below. Pull up older posts there. Check the site with patience, as it has over 2380 posts now. All are related to electronic equipment repair help. If you search the site in Timeslide option, which can be selected from the drop down list at the top left of the display window, it will be easy to locate the related post. You can also do a search by type in the brand name to your device into its search box at the top right of display window.http://electronicshelponline.blogspot.com/

In fact your TV is in dead condition. Troubleshooting should begin at main power regulator bard itself. Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" or "Flipcard" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. You can also click the [Home] tab to see the latest updates. It will make search easy. There are more than 1350 posts to different brand TVs now. Pull up older posts there.

This is usually a menu option that you can reach with your remote. I don't have this particular TV, but if you can turn them off, it is usually a menu configuration option. Hunt around with your remote until you find the configuration menu and look for the "sound" settings.If your TV has a headphone jack, try plugging a set of headphones into the TV to see if that disconnects the internal speakers. If it does, go to Radio Shack and buy an appropriately sized blank plug and just plug that in to the headphone jack to disconnect the speakers.

The little LED light is it on. Also did you follow the suggesations in the users/owners manual. Can you bring up the menu froim the remote? Have you telephoned the warranty phone number in the manual

Replace the Main Board.

I believe you have connected your computer to the tv? Please note that if you connected via VGA or DVI it is a video only signal. You will need a seperate cable for sound output . Connect the audio out jack of your computer to the headphones port of a tv using a 3.5mm to 3.5mm connector like this
http://www.amazon.co.uk/3-5mm-Stereo-Jack-Plug-1-2M/dp/B00077DC3S

Vancebaldwin.com but I would not replace, cost more than new!

Your set will automatically be in the correct resolution. If your set is broadcasting in 480, then that is what it is receiving. I would check your cable or satellite box to verify they are putting out the correct resolution.

It is probably your video source. If you are using component video, some devices only output 480p.

Check the settings of your sources. The TV will display only what the device sends to it.

In most devices under a settings directory there will be settings labeled "Video" or "Resolution" Changing these settings to more appropriate High Definition resolutions should solve your problem.

Depending on the speakers you have, they'll have different inputs.
Some have an rca input, some have a coaxial or a digital optical cable.
Your tv has a digital optical output.
Simply purchase a digital optical cable and plug it in your tv and your wireless speakers.
You'll have to change the sound output of the television in the settings menu.
It'll be under the sound area.