Fixed: Vizio TV Won’t Turn on But Power Light Fades Out

vizio tv won't turn on power light fades off

Smart TVs like the ones from Vizio are ideal for home theater entertainment if you want the best picture quality. However, all these perks can be outshined when you discover that your Vizio TV won’t turn on, but the power light fades out.  

To avoid further frustration and unnecessary repair expenses, here are all the possible troubleshooting methods listed by our experts.

Why Does My Vizio TV’s Power Light Fade Out?

You may not know, but the most recent Vizio TV releases are designed with white LED indicator lights. These features are designed to fade off after the TV turns on. However, you can easily tell there’s an issue if the TV doesn’t turn on even after the power light fades. 

Why Won’t My Vizio TV Turn On?

Before you jump into the self-troubleshooting frenzy, you should know that there are various reasons why your Vizio TV won’t turn on. Not all problems can be solved by one solution because the issues you’ll encounter could range from power to hardware defects. 

Activating a Vizio TV

Fortunately, our troubleshooting experts have easy fixes to these technical difficulties.

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

Fix #1: Check Your TV’s Settings

Not many users know this, but your TV settings could be the main culprit as to why the device won’t turn on or wouldn’t deliver any display. 

First, it’s a must to check if its firmware is up-to-date. You can confirm this by launching the Settings > System menu and clicking the Check For Updates option. 

Vizio tv settings

If it’s not the problem, it must be the CEC settings hindering your TV’s auto-power-on feature. To disable this mechanism, you must go to the System menu and find the CEC selection to disable it.

Other than that, you can also tweak Vizio TV’s power mode from its settings. We recommend using Quick Start mode for your TV to turn on automatically.

Fix #2: Power Cycle Your TV

Most TV issues are resolved by power cycling, so it should be on top of your troubleshooting list. If you want to do this properly, you must ensure that your Vizio TV is turned off before pulling out the power cable from its port. 

VIZIO TV power and volume button

After that, press the device’s power button and wait for at least ten seconds before letting go. From there, you can check if your TV will open or not. 

Fix #3: Check for Backlight Failure

It’s also possible that your TV is experiencing display issues with backlight failure. The easiest method to confirm this is to get a flashlight and point it on the screen as close as possible. If you can see a formed picture in the lighted section, it’s a backlight problem for sure. 

You’ll need to replace a single LED or the entire strip to resolve this. If you’re unfamiliar with hardware troubleshooting, we don’t suggest doing this by yourself. 

Fix #4: Inspect the Cables + Remote

Another thing you should check before concluding any other internal problems is the unit’s cables and remote controller. 

TV connections and cables

Inspect the cables closely and ensure that none of them is damaged or loose. As for the remote, you can try changing the batteries to see if it’ll work. 

Fix #5: Remove Any Interfering Device

If your TV is connected to another device like a speaker or a game console, we suggest disconnecting it in the meantime to see if it’s the one hindering the startup. By discharging these capacitors, your TV will return to its bare state. 

Fix #6: Test the Power Light

You can pinpoint the problem by testing the power lights. After you plug the TV back on, observe if the power light flashes fast. 

plug and power outlet

If it does, your device is getting enough power, and the problem stems from the system board. Otherwise, it’s a power board issue. 

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

You may not know, but problems in the TV’s power supply and main board can cause reception problems. Identifying these issues depends on the power light testing you did in the previous fix we discussed. 

Nevertheless, replacing these components requires users to get the exact board model number. If it’s not in your user manual [1], you must open your TV parts to see the code etched on the boards. It’s important to get the exact model number, or else you’ll buy the wrong board that won’t work with your TV. 


As our team discussed, there are several reasons why your Vizio TV won’t turn on while its power light fades out. It could be tricky, but your TV should be fine as long as the troubleshooting methods we discussed work. 

If you can’t handle technical and electrical issues, don’t hesitate to opt for professional technicians to fix your TV to avoid further problems.  


Willie Greer
Willie Greer
Willie Greer is the founder of The Product Analyst. A cinephile, he has made it a personal quest to achieve the awesomest home theater possible. He now shares what he has learned through the years on the site, and has enlisted the help of tech-savvy colleagues in providing more insight about today’s most sought-after gadgets.