Hisense 55" Television. When on looks like a barcode. Is that the backlights?

A blinking red light on the power button of a Hisense 55 inch model 50R6E3 TV could indicate a problem with the TV's power supply. It could be caused by a malfunctioning component, such as a blown fuse or failed capacitor, or it could be an indication that the TV is overheating. In some cases, a blinking red light can also indicate that the TV's firmware is not up to date and needs to be updated

There are several potential causes for a Hisense 55 TV to go black and start flashing the start-up screen almost imperceptibly. Some possible causes could include:

1. A problem with the TV's power supply: The TV's power supply unit could be experiencing a malfunction or failure, causing the TV to shut off and display the start-up screen.
2. A problem with the TV's HDMI or other video input: If the TV is connected to a device such as a cable box or streaming device via HDMI or another video input, there could be an issue with that connection that is causing the TV to display the start-up screen.
3. A problem with the TV's main board: The main board is responsible for controlling the TV's various functions and components. If the main board is malfunctioning, it could cause the TV to display the start-up screen.

To troubleshoot the issue, you can try the following steps:

1. Check the power cord and outlet to ensure the TV is receiving power.
2. Disconnect the TV from any devices it is connected to and try turning it on again.
3. Check the TV's user manual for any troubleshooting tips or reset procedures.

If the issue persists, it is recommended to have the TV inspected by a professional repair technician. They will be able to diagnose the issue and recommend the necessary repairs

Hisense TV Blinking Codes (Flashing Red light Fixed)

https://homespoiler.com > hisense-tv-blinking-codes
Oct 8, 2022 - If it blinks 2, 3, or 5 times, it means there is an issue with the backlight, mainboard, inverter, or power board. On the other hand, if the ...
‎Hisense TV blink codes concept · ‎Fixing the Hisense TV blinking... · ‎FAQ

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https://www.google.com/search?q=hisense+tv+3blinks&

However, best advice. Balance how old and if it is time to upgrade. Hisense is a budget brand.

https://www.fixya.com/support/r29790007-repairing_own_television

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Hi Henry, since the tv is not turning on to check for any video in the background then it gets a bit more complicated to pinpoint where the failure might be.
This TV has a power supply and main board combined in one board. Replacing the whole circuit board might fix it but it could also be defective LED's strips.

Let me know if you require further assistance.

Hi try to use a power module if you can (it's a risky situation "high voltage" or get a qualified personel) on the power issue turn it to 5 volts up to 7 volts while checking the functionality.

Question edited for 'make model (what it is)'.
Question moved from Computers and Internet category to Hisense Television.

Check the power to the LEDs. Power the LEDs remotely and decide if the fault is the power supply or the LEDs. Or just buy both from Shop Jimmy and hope for the best.

But this might happen :>(
https://www.fixya.com/support/r29790007-repairing_own_television

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No it will not be the tcon board clicking and if you see the logo that board is working. Your going to need to get some voltage readings from the power board and see if it's working ok for starters. Next would be unplug the backlight connector and see if the sound goes away, if it does you have bad backlights and I think this will be the issue

Unfortunately the problem with your TV is the filter on the backlight LEDs. LG also has this problem where the filters burn off and leave a bluish LED. The only solution is to replace all the LEDs (or have replaced).

Sounds like a backlight issue, best way is to have it serviced under warranty. If you have to pay for a repair it is probably better to buy a different television.
http://hisense-usa.com/warranty

HelloCheck the backlight inverter board. If it has damged, most common fault to LCD TVs, there will be no backlight to the LCD screen, and will look black. Your tV has sound output without picture. This means that all other boards ar functioning well. Check the backlight inverter section and CCFL tubes used in backlight assembly. OK.