If you’re reading this article, chances are you’re experiencing issues with your Hisense TV flickering. I know how frustrating it can be when your TV display keeps flickering or blinking, ruining your viewing experience.

But don’t worry; there are several possible causes for this issue and, fortunately, some simple fixes you can try.

In this article, I’ll take you through the steps you can take to identify the cause of the flickering and how to fix it. I’ll review everything from loose cables and outdated firmware to electrical interference and defective backlight.

By the end of this article, you’ll have a good understanding of the common causes of Hisense TV flickering and how to fix it, as well as some tips for preventing it from happening.

So, let’s dive in and get your Hisense TV back to delivering the high-quality viewing experience you deserve.

Possible Causes of Hisense TV Flickering

There are several reasons your Hisense TV might be flickering, and I’ll go over some of the most common ones below. By understanding the possible causes of the flickering, you’ll be better equipped to identify and fix the issue.

Loose or Damaged Cables

Sometimes, the cable connecting the TV to the input source can become loose over time, which can cause flickering or a loss of signal. Similarly, a damaged or frayed cable can cause flickering or other display issues.

Outdated Firmware or Software

If your TV is running outdated firmware or software, it might not be able to process the video signal properly, which can result in flickering or other visual glitches.

Electrical Interference

If there are other electronic devices nearby that are emitting electromagnetic interference (EMI) or radio-frequency interference (RFI), this can cause flickering on the TV. Examples of such devices include routers, microwaves, or other electronic equipment.

Power Supply Issues

If the TV’s power supply is not delivering a consistent voltage or current, this can result in flickering or other display issues.

Defective LED Backlight

The backlight is responsible for providing the TV screen with illumination, and if it’s malfunctioning, it can result in flickering or other visual glitches.

Now that the common factors contributing to Hisense TV flickering have been identified let’s dive in and explore some solutions for rectifying this issue.

How to Fix Hisense TV Flickering

Here are some step-by-step instructions on how to fix Hisense TV flickering:

Power Cycle Your TV

Performing a power cycle on your Hisense TV is a simple yet effective solution to eliminate potential issues that may be causing flickering due to capacitors retaining charge or internal flash memory glitches.

By carrying out a power cycle, you can clear any residual power and reset the TV’s system without losing any of your previously saved settings. The process is quick and straightforward.

To initiate the power cycle, unplug your Hisense TV and locate the physical power button below the IR receiver. Hold the power button for at least 15 seconds, allowing residual power to drain for 30 minutes.

After the designated waiting period, plug your TV back in and switch it on. If the power cycle is successful, you should see a red light. It may seem simple, but a power cycle can effectively solve most issues.

Check HDMI Cable

The flickering and horizontal lines that can be seen on Hisense TVs is likely due to a weakly connected cable. The issue could be due to a broken HDMI cable, a damaged HDMI port with broken pins, or a weak HDMI connection where the cable and connector are not making full contact.

To determine whether this is the issue with your TV, follow these steps:

  1. Turn off your TV and disconnect any physical cables, including HDMI, connected to the back of the TV.
  2. Use compressed air, if available, to clean the contacts on the cable and the connector on the TV. If compressed air is not available, blowing gently on them will suffice.
  3. Firmly push the cables back into their slots on the TV.
  4. Turn your TV back on.

If the problem persists, try using a different HDMI input. Most TVs have multiple HDMI ports, and if one is located in a different part of the TV, it is advisable to try that one, as it should have a separate connection to the TV’s main board.

To use a different HDMI port, plug your cable into the new port and note the number next to it. Then select this HDMI input on your TV by using the Input or Source button on your TV remote or the Input or Menu button on your TV itself.

If the issue persists, try removing all external devices, including those connected by Bluetooth and any coaxial or signal cables, so that the TV only has a power cable connected to it.

When you turn your TV on, the screen will be black as it is not receiving any picture, which may make it difficult to see any flickering. Pull up the on-screen menu to see if the flickering is still present. If the flickering persists, it indicates that your external connections are fine and the problem lies within the hardware of your TV.

If the flickering has stopped, re-seat your HDMI and other cables one by one to determine which cable requires replacement.

Update Firmware or Software

As with any product, it is crucial to ensure that the firmware of your TV is up to date, even if it is brand new. Although most Hisense TVs come with automatic firmware updates, it’s important not to assume that this feature is enabled on your device.

To make sure OTA firmware updates are enabled on your Hisense Smart TV, simply follow these simple steps:

  • Press the Home button on your remote control.
  • Navigate to the “cog” icon for settings.
  • Select Support and System Update.
  • From there, ensure that the Auto Firmware Upgrade option is turned on.

However, if your TV doesn’t have OTA support, you can still update the firmware by following these steps:

  • Press Home on your remote.
  • Click on the “cog” icon, select All, then About.
  • Click System Update.
  • Click on Detect to check for any available updates.

For older Hisense TVs, updating firmware may not be as straightforward, as the option for updating your firmware may not be available. In such a case, you need to download the latest firmware and install it manually on your TV via a USB stick. If you find yourself in this situation, don’t hesitate to call Hisense Support, who will guide you through the process.

Eliminate Electrical Interference

If the flickering continues, nearby electronic devices may be causing interference. To eliminate this possibility, try moving electronic devices away from the TV and see if the flickering stops. If this is not possible, you can purchase a power conditioner or surge protector to help reduce interference.

Troubleshoot Power Supply Issues

If the flickering persists, the TV’s power supply may be the problem. You can troubleshoot this by checking the voltage and current output of the power supply using a multimeter. If the readings are not within the appropriate range, the power supply may need to be replaced.

Replace the Defective LED Backlight

If none of the above steps have resolved the issue, the TV’s LED backlight may be defective. To replace the backlight, you will need to open up the TV and remove the existing backlight before installing the replacement. This can be a complex process and may require the help of a professional.

Additional Tips for Preventing Hisense TV Flickering

Here are some additional tips for preventing Hisense TV flickering:

  1. Keep the TV away from sources of interference: One of the best ways to prevent flickering is to keep your Hisense TV away from sources of electrical interference. This includes other electronic devices like routers, microwaves, and other appliances.
  2. Use high-quality cables: To ensure a stable and clear signal, it’s important to use high-quality cables when connecting your TV to an input source. This can help prevent flickering and other display issues.
  3. Avoid power surges: Power surges can damage the electronics in your TV and cause flickering. To prevent this, use a surge protector or power conditioner to regulate the voltage and protect your TV from electrical damage.
  4. Keep the TV cool: Overheating can cause electronic components to malfunction, resulting in flickering or other display issues. To prevent this, ensure your Hisense TV is well-ventilated and kept cool.
  5. Regularly clean the TV: Dust and dirt can accumulate on the TV’s surface and cause overheating or other issues. Regularly cleaning your TV with a soft, dry cloth can help prevent these problems and ensure the TV runs smoothly.

Adhere to these tips, and you can easily protect your Hisense TV from flickering while ensuring it provides a superior viewing experience in the long run.


Experiencing flickering on your Hisense TV can be frustrating, but it’s usually something that can be resolved with the right steps. You can usually resolve the issue by checking and securing cables, updating firmware or software, eliminating electrical interference, troubleshooting power supply issues, and replacing defective LED backlights.

Additionally, by following our tips for preventing Hisense TV flickering, you can help prevent it from occurring in the first place.

If you have tried these steps and are still experiencing flickering, I recommend contacting a professional or the manufacturer for further assistance. They may be able to provide additional guidance on how to resolve the issue.

Overall, by taking a proactive approach to maintaining your Hisense TV and following these steps, you can help ensure that it delivers a high-quality viewing experience for years to come.

Tim Miller

Tim has always been obsessed with computers his whole life. After working for 25 years in the computer and electronics field, he now enjoys writing about computers to help others. Most of his time is spent in front of his computer or other technology to continue to learn more. He likes to try new things and keep up with the latest industry trends so he can share them with others.

Leave a Comment