Hisense TV Backlight Not Working? – (Easy Fix Guide)

Is your Hisense TV backlight not working? That is a bad sign!

TVs depend on a backlight composed of LED bulbs to display all the images on the screen. A black screen usually indicates an issue with it.

If the Hisense TV’s backlight doesn’t work, you must reset the TV and test the power cord as well as the wall socket. Alternatively, you will need to test internal components and fix or replace them.

Below we will dive into the problems being faced and the solutions available!

Hisense TV Backlight Not Working – Check 7 Solutions!

Solution #1: Physically Reset The TV

Is the Hisense smart TV backlight not working? One of the initial steps to consider is physically resetting the TV using the buttons located on the TV itself.

This reset can help resolve a variety of problems, especially if they are software or settings-related.

Follow these simple steps:

1. Locate the physical buttons on your Hisense TV.
2. Turn off the TV using the power button, if it’s not already off.
3. Press and hold the Reset button for about 15-20 seconds.
4. Release the button.
5. Turn on the TV using the power button.

Solution #2: Test The Power Cord

Still the Hisense Roku TV backlight not working? In that case, it is worth checking if the power cable is at fault.

After all, we can consider the possibility that the issue is merely due to a lack of proper power.

The first steps to test the issue are these:

1. Grab a multimeter.
2. Set it to continuity.
3. Test the TV’s power cord.

If the results show that the power cord is defective, you must look for a replacement.

1. Buy a new power cord with the same power specs.
2. Locate the TV’s part where the defective cord is.
3. Disconnect the old cord.
4. Carefully connect the new one.
5. Test it.

If the power cord was the culprit, then the TV should turn on and light up normally.

Solution #3: Test Your Wall Socket’s Voltage

Sometimes, the inability of your Hisense TV to power on might not be directly related to the TV itself but could involve the power source.

It’s important to check the wall socket where your TV is plugged in to ensure it’s delivering the right voltage.

If the wall socket isn’t functioning correctly, it can cause your TV to remain unresponsive.

To address this, follow these steps:

1. Unplug your Hisense TV from the current wall socket.
2. Plug in another electronic device or lamp to the same socket;
3. Check if it works.
4. If the device doesn’t work, test another socket to ensure it’s not an issue with your TV’s socket.
5. If the socket is confirmed to be functional, it is time to grab a multimeter.

Test The Voltage

Possibly, the socket’s voltage is overkill for your TV or has been fluctuating.

Here is how to test that:

1. Turn the power breaker off.
2. Plug the multimeter into the socket.
3. Set it to continuity or voltage.
4. The values must not fluctuate or show up above the TV’s required voltage (check the TV’s label or box to learn its necessary voltage).

Once you learn that the socket is defective, you must connect the TV to a different socket and see if the problem persists. 

Alert: Issues on the electrical current can damage the TV’s internal components. Thus, the TV could already be damaged and you need to check the solutions below.

Solution #4: Verify The Backlight Inverter Board

If your Hisense TV’s screen remains black, it’s essential to check the backlight inverter board, which is responsible for powering the backlight.

A faulty inverter board can lead to display issues. Before you proceed, understand that this solution requires some technical expertise.

Here are the steps to verify the backlight inverter board:

1. Turn off your TV and unplug it from the power source.
2. Carefully remove the back panel of your TV.
3. Locate the backlight inverter board (it is typically the smallest board within the TV).
4. Check for any visible damage like burned or charred components on the board.
5. Examine the connections and cables leading to the backlight inverter board for any loose or disconnected wires.
6. Any of the two above indicates that replacement is necessary.

How To Replace?

If visual damage is evident, take note of the board’s part number and order a replacement from a reputable source.

When the new inverter board arrives do the following: 

1. Unplug and remove the old board from its connectors.
2. Connect the new inverter board in its place
3. Ensure the cables are secure
4. Reattach the back panel
5. Plug in your TV.
6. Turn it on to check if the issue has been resolved. 

If the screen is no longer black, the replacement was successful.

Solution #5: Check The T Con Board

If your Hisense TV displays a black screen but still has audio, the issue might be related to the Timing Control (T-Con) board.

The T-Con board is responsible for processing the image and transmitting it to the display.

Here’s how to diagnose and resolve the problem:

1. Turn off the Hisense TV and unplug it.
2. Remove the TV’s back panel.
3. Inspect the T-Con board for visible damage.
4. Check the LVDS cables for secure connections and damage.

Test The T-Con Board

If you identify any noticeable damage on the T-Con board or its components, the board likely needs replacement. 

1. Disassemble the T-Con board.
2. Plug a multimeter into its terminals.
3. Check the results for continuity.

Replace The T-Con Board

Do the results show that replacement is necessary? Then note down the board’s part number and order a compatible replacement T-Con board.

1. Carefully connect the new T-Con board in its place.
2. Ensure the cables are secure.
3. Reattach the back panel.
4. Plug in your TV.
5. Turn it on to check if the issue has been resolved. 

Solution #6: Test The TV’s Main Board

When your Hisense TV shows a black screen while audio plays, the main board may be the culprit.

That’s because the main board is responsible for processing signals and controlling various functions.

So it could be damaged in a way it processes only audio but no video. 

Here is how to diagnose the board:

1. Carefully remove the TV’s rear panel.
2. Inspect the main board for visible damage (burnt areas, loose connectors, or signs of overheating).
3. Inspect the connections between the main board and other components like the T-Con board and power supply board.

Test With A Multimeter

If you find any noticeable damage on the main board, or connections, or suspect it is the issue, you must use a multimeter to test it.

1. Detach the T-Con board.
2. Plug a multimeter into its terminals.
3. Check the results for continuity.

Zero continuity or fluctuating values are indications of a serious issue.

How To Replace

Once you know that the TV’s main board is malfunctioning, you must identify the part number of the board.

Then buy a compatible replacement and do the following:

1. Carefully connect the new main board in its place.
2. Ensure the cables are secure.
3. Reattach the back panel.
4. Plug in your TV.
5. Turn it on to check if the issue has been resolved. 

Note: It is very rare for a TV’s main board to be the cause of the backlight’s failure. Moreover, the main board can be an expensive item.

Solution #7: Replace The Backlight Strip

Dealing with a persistently black TV screen? The culprit might be the backlight, which is responsible for lighting up those vibrant colors on your screen.

While not all LEDs fail at once, the backlight itself can stop working properly.

Here’s a simple guide to figure out what’s going on:

1. Turn on your TV and start watching something (if possible).
2. Make sure the room is well-lit.
3. Wait until your screen goes completely black.
4. Grab a flashlight.
5. Shine the flashlight on your TV screen.

If you can see the picture using the flashlight, it’s a sign that your TV’s backlight might be the issue.

How To Replace The Backlight

The backlight in your TV is made up of lots of tiny LED lights. Even if not all of them are bad, it’s often easier to replace the whole backlight strip.

You can get a new backlight from online stores.

Here’s how to do it:

1. Take apart the front of your TV.
2. Carefully remove the glass screen.
3. Take out the old, broken backlight strips.
4. Put in the new backlight parts.
5. Ensure they are firmly in place.
6. Reassemble the TV.

Keep in mind that taking apart newer TVs can be a bit tricky. If you’re not sure how to do it, it’s a good idea to get some professional help.

Quick Recap

When the Hisense TV backlight is not working you will have to use your toolkit and electronics expertise to disassemble the TV and test many components.

Even though it can sound scary, the only thing you need to worry about is keeping the TV level in a place where it won’t be damaged.

The blog is filled with other Hisense TV guides if the issue on your TV is easier!