20 Most Recent TCL LE55FHDF3300 55 Inch 1080p 240Hz LED LCD HDTV Questions & Answers

It can be bought from any hardware shops.

try update your TCL TV firmware by current update version file from USB stick https://electronics-tricks.blogspot.com

Replace the power supply.

It sounds that the main system control memory IC is faulty. Replace it and check. This is a very cheap to buy IC. Eventhough its cost and size is small, the function of it when the set is switched ON, is great. It is a very small IC, having only 8 solder terminals. If you wish to get more details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name/model number/IC used, in the search box at the top right of the display window

Power supply regulator section [mains] to your TV should be troubleshooted. This is a skilled work.

Check the internet connection. The television can't update if it can't see the internet. Resetting it breaks the previous settings. Just for fun, reboot the router as well and wait 15 minutes until all the lights come back on. Then reestablish the television connection to the router. Harwa is not a make we know here in North America. https://www.google.com/search?q=Harwa+Smart+television.+How+to+restore+Apps ..

The most obvious reason is an overheating issue in the Power Supply board. There are other ideas here, but you need to take it to a television engineer to diagnose https://www.google.com/search?q=television+will+suddenly+turn+off+every+4+minutes ..

general steps: Get the TV remote control and push the "Menu" button and select "Options". Select "Child Lock" from the "Options" list. On some televisions, the "Child Lock" is named "V-chip". Choose the "Remove Child Lock" selection. Highlight this and then hit the "Enter" button. Enter the four-digit code that you used when you activated the child lock feature. If you cannot remember it, your only option to deactivate the child lock is to reset the TV. The instructions for resetting a TV is written on the user's manual of the TV. Exit the TV menu once you have entered the four-digit code. To do this, press the "Exit" or "Menu" button on the TV's remote control. If you don't have a remote, you might try leaving the TV unplugged overnight. Some TVs will 'forget' their settings if left without power for a long period. You could also potentially buy a cheaper universal remote, and use that to turn off the child lock.

To pair your Ruwido Amadeus R 9710 remote to your TV, you can follow these steps: Insert Batteries: Your remote is powered by two 1.5 V AAA batteries1. Make sure to insert the batteries correctly. Switch on your TV: Ensure your TV is turned on. Press the TV key: Press the TV key on your remote control for approximately 4 seconds until the LED flashes twice. Enter the Code: After seeing the 2 flashes and within 5 seconds, enter the 3-digit numerical code from the list provided with your remote2. After entering the code, the LED will flash twice indicating that the code has been accepted. Test the Remote: Point the remote control towards your TV and press the key. If your TV does not respond by going into Stand-By mode then repeat steps 3 to 5 and enter the next code in the list. Bed.-Anl. H2 Version1 (ruwido.com)

That sounds like it has a backlight fault. A good TV engineer can possibly repair that for you.