Vizio TV Won’t Turn On Power Light Fades Off

Last Updated on July 26, 2023 by Easyapns

In the world of entertainment, Vizio TVs are renowned for their quality, but users may encounter an issue where the TV won’t turn on, and the power light fades off. This frustrating problem can have various causes, from power source issues to software glitches. To resolve it, check the power source, cables, and remote control, perform a factory reset, and if needed, contact Vizio support for professional assistance. With these troubleshooting steps, you can regain the full functionality of your beloved Vizio TV.

Reason: Why Does My Vizio TV’s Power Light Fade Off?

The power light on your Vizio TV fades off due to the design of the TV’s white LED indicator lights. These lights are intended to fade off after the TV is powered on to provide a visual confirmation that the device is functioning properly. However, if the power light fades off and the TV fails to turn on, it indicates that there may be an underlying issue preventing the TV from powering up correctly.

How to Fix a Vizio TV That Won’t Turn On While the Power Light Fades Off Error

#1. Check Your TV’s Settings: 

One possible reason for the TV not turning on is incorrect settings. It’s important to ensure that your TV’s firmware is up to date. You can do this by navigating to the Settings menu, selecting the System option, and clicking on Check For Updates. If an update is available, install it and restart the TV. Outdated firmware can sometimes cause power-related issues.

Additionally, check your TV’s CEC (Consumer Electronics Control) settings. CEC is a feature that allows devices connected via HDMI to control each other. In some cases, CEC settings can interfere with the TV’s auto-power-on feature. To disable CEC, go to the System menu and locate the CEC selection. Turn it off and check if the TV powers on properly.

#2. Power Cycle Your TV: 

Power cycling involves completely disconnecting the TV from power to reset its internal components. To power cycle your Vizio TV, start by turning it off. Unplug the power cable from the TV’s port and wait for a few minutes. Then, press and hold the power button on the TV for at least ten seconds. Release the power button and reconnect the power cable. Finally, try turning on the TV and check if it powers on successfully.

#3. Check for Backlight Failure: 

If the TV’s power light fades off, but there is no display, it could indicate a backlight failure. To confirm this, take a flashlight and point it directly at the TV screen from a close distance. If you can see a faintly formed picture in the illuminated section, it indicates a backlight problem.

Typically, Fixing a backlight issue involves replacing a faulty LED or the entire backlight strip. However, this can be a complex task, and if you need to become more familiar with hardware troubleshooting, it is recommended to seek professional assistance.

#4. Inspect the Cables + Remote: 

Before assuming internal problems, it’s important to check the external connections. Inspect the cables that connect your TV to external devices such as cable boxes, game consoles, or sound systems. Ensure that all cables are securely connected and not damaged. A loose or damaged cable can prevent the TV from receiving power or signal properly.

#5. Remove Any Interfering Device: 

External devices connected to the TV, such as speakers or game consoles, can sometimes interfere with the startup process. Disconnect all external devices temporarily and try turning on the TV. By removing these devices, you discharge any capacitors causing conflicts, allowing the TV to start up properly.

#6. Test the Power Light: 

After reconnecting the TV to power, observe the behavior of the power light. If the power light flashes rapidly, it indicates that the TV is receiving sufficient power. In this case, the issue may lie with the system board, which requires professional repair or replacement.

#7. Check for Hardware Defects (Power Supply Board and Main Board): 

If the previous steps did not resolve the issue, the TV may have hardware defects. Problems with the power supply board or main board can cause reception and power-related issues. Identifying the problem requires further investigation based on the power light testing conducted in the previous step.

To address these hardware defects, obtaining the exact model number of the faulty board is crucial. The model number can often be found in the TV’s user manual. If unavailable, it may be necessary to open the TV and locate the code etched on the power supply board or main board. You can purchase the appropriate replacement board with the correct model number or seek professional repair services.

#8. Contact Vizio support:

If none of the above steps work and your TV still won’t turn on, there may be an internal hardware issue. In this case, it’s best to contact Vizio’s customer support or seek the assistance of a professional technician.



When facing a Vizio TV that won’t turn on while the power light fades off, it’s important to troubleshoot systematically. By checking the TV’s settings, power cycling, inspecting cables, removing interfering devices, and conducting power light tests, you can identify and resolve various potential issues. However, it is recommended to seek professional assistance for complex hardware defects or if you are unfamiliar with hardware troubleshooting.

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