Hisense TV Has Sound But No Picture? – (Here’s How to Fix)

What to do when the Hisense TV has sound but no picture? All answers are below!

The Hisense TV can be Roku-powered or Android-powered, and the issue we are investigating applies to both varieties.

You must refer to this guide whenever you face “no picture” trouble!

To fix a Hisense TV with sound but no picture, discharge static, check connections, and ensure power stability. Firmware or cache issues could cause mid-viewing blackouts.

Read below to learn all you can do to solve the issue!

Hisense TV Has Sound But No Picture – 7 Solutions!

Solution #1: Discharge Residual Electricity

Sometimes, the Hisense Roku TV has sound but no picture. You turn it on and hear the show playing, but the screen is fully black.

Before jumping to catastrophic explanations, we can consider that the issue is related to a glitch in the power feed.

Some TVs present that, but the issue is easy to solve:

1. Unplug the TV from the outlet.
2. Leave it be for a while.
3. Press the TV’s power button for a few seconds while it is off.
4. Turn the power back on.

Then, check if the situation is solved. You must also pay attention to static noise. That indicates there is still electricity where it shouldn’t be.

Moreover, the issue with static could be related to connected devices, as you will see below.

Solution #2: Check The Connected Cables/Devices

Do you have external devices connected to your Hisense TV? Nowadays, most of our devices connect to the TV via HDMI.

However, other cables can also cause interference whenever they are damaged.

So here are the steps you must take to verify the situation:

1. Disconnect all connected devices from your TV.
2. Turn it on and see how it behaves.
3. Is the screen’s image back?

If the screen image has returned, you know the issue is with one of the connected devices.

How To Avoid The Issue Again?

You certainly want to keep using your external devices with the TV.

In that case, you will do the following:

1. Check the ports on the TV and your external devices.
2. Use an anti-static brush to remove dust and rust.
3. Ensure that the connections on the ports are not bent in any way.
4. Check the conditions on the cables you are using.

Do you have a different cable in your house? Then, try it before assuming that your device is damaged.

Moreover, you could try plugging your device into a different TV (if available).

Takeaway: You must determine if the issue is on the ports or the cable. Changing the cable is very simple. If the ports are damaged, simply clean them.

Solution #3: Verify Everything Power-Related

Okay, so the sound works when you plug the TV and power it on, but the picture doesn’t. The issue behind that could be a power deficit.

For example, the power cable is damaged and delivers only part of the energy necessary for your TV. Alternatively, your power outlet is the culprit.

Here is a quick way to test:

• Plug your TV into a different power outlet and see how the situation goes. 
• If a power extender is necessary, ensure it has the correct power rating. An extender with a lower power rating will cause the same issue.

Check The Cable

Checking the TV’s power cable is a more delicate matter.

You will need a multimeter and pay attention to the electricity levels read.

Do the following:

1. Touch the multimeter’s probes to the cable’s end.
2. Set to continuity or to the voltage your TV requires.
3. See if the values fluctuate beyond reasonable levels.

You should check your TV’s user guide to learn how much voltage it needs. Acceptable fluctuations happen around the intended voltage.

Anything below that will show you that the cable is damaged.

How To Replace?

Replacing a TV’s power cable is easy if you have the tools and a wide area to manage the TV.

1. Disassemble the TV’s components where the cable is located.
2. Locate the cable’s inner attachments.
3. Disassemble it.
4. Assemble a new cable with the proper specs.
5. Reassemble the TV.

Then, test your TV. The problem should be gone. 

Solution #4: Update The Firmware

The issue you face is related to the firmware if it only happens after a few minutes. The firmware can’t process some data because it is outdated.

So you need to restart your TV and follow the steps below according to the system your TV uses.

For Roku-enabled Models

Here is how to update your Roku Hisense TV:

1. Go to Settings.
2. Locate System Options.
3. Select Check for Updates.
4. Click on Update if available.

For Android Hisense Models

If you have an Android Hisense TV, the updating process goes as follows:

1. Click on the main menu’s “Gear icon.”
2. Enter into “Device Preferences.”
3. Select “About.”
4. Go to “System update.”
5. If “Update Now” shows up, select it.

Solution #5: Reset The TV

There are two possible approaches here. If your TV goes black only after a while, you might try resetting it through the firmware using your remote’s buttons.

However, if the TV’s screen is always black, you must reset it through the physical button.

Reset Through The Firmware

These are the methods to reset a Hisense TV that runs on Android:

1. Hold “Exit” on the remote for 15 seconds.
2. A prompt will show up on the screen.
3. Confirm that you want to reset the TV.
4. Turn the TV off.
5. Turn it back on after 20 seconds.

Reset A Roku Hisense TV

If your Hisense TV runs on Roku software, the factory reset will follow these steps:

1. Locate the TV’s settings.
2. Enter “Device preferences.”
3. Choose “Reset.”
4. Confirm on “Factory data reset.”
5. Choose “Erase everything.”

Use The Reset Button

Is your TV’s screen not lighting up at all? In that case, you must use the physical reset button.

1. Locate the reset button between the HDMI port and audio input.
2. It is a pinhole, so you will need a pin or something similar to insert it.
3. Insert a pin and keep it pressed for up to 15 seconds.

Solution #6: Clear The TV’s Cache

When your TV only glitches while watching something, you must restart it and clear its cache.

The TV’s cache is a data amalgamation that helps it run smoothly as you install more apps and add more data.

But the cache can get corrupted, so you must clear it.

1. Press the Menu button on the remote.
2. Navigate to the Settings.
3. Choose “System.”
4. Open the “Application Settings.”
5. Find the “Clear Cache” option and select it.

For Roku-powered Models

The cache-clearing method works this way for Hisense TVs powered by Roku:

1. Activate the TV’s Home function using the remote.
2. Navigate to “Home” on the screen.
3. Rapidly press the “Home” button five times.
4. Select the “Up” option.
5. Double-tap “Rewind.”
6. Double-tap “Fast forward.”

Solution #7: Replace The Backlight LED

If the TV is always black, the backlight LED has burnt out. The backlight LED displays all the colors you see on your screen.

Sometimes, not all LEDs burn out, but the backlight stops working even so.

Here is how to test:

1. Turn the TV on and play anything on it.
2. Turn the room’s lights on.
3. Wait for the screen to get black again.
4. Turn a flashlight on and point it to the TV’s screen.
5. Check if you can see moving images.

If it is possible to see the show that’s already been playing, the TV’s backlight is damaged. 

Replace The Backlight

The TV’s backlight is composed of many LED lights. Not all LED bulbs may have burnt out, but replacing the entire backlight strip is easier.

You can find a backlight replacement for your TV at online retailers. 

1. Disassemble the front of your TV.
2. Remove the glass screen very carefully.
3. Detach the old, damaged backlight strips.
4. Install the new components.

Note that disassembling newer TVs is a very delicate procedure. If you are unfamiliar with it, you should let a professional do it.

Alert: Sometimes, the backlight strip is cheap, while other times, it is expensive. If the backlight strip is almost the price of a new TV, simply buy one.

Quick Recap

The Hisense TV has sound but no picture because the firmware is having trouble processing some data.

But if the issue happens whenever you turn the TV on, the problem is hardware-related, which requires you to check the power cable and the backlight LED.

Hisense TVs are easy to fix and manage, so keep reading the blog if you need further help!