@thkeith3rd this sounds like either a power board issue or a backlight array issue. Either way you would have to take it apart and take a closer look at the board. Make sure that there are no leaking, domed looking capacitors or any other obviously damaged components. Make sure that all cables are properly seated by removing them and the reseat. Check to make sure that there are no broken pins etc. on those contacts. after that you need a multimeter to measure the output on the different connectors and validate their values against those on the boards. Main issue I'd check is the connection of the LED's to the power board etc. Answer from oldturkey03 on ifixit.com
Vizio Support
support.vizio.com › s › article › No-Video-No-Picture-Black-Screen
VIZIO Support
The VIZIO Support homepage provides the latest trending support topics and support videos, user manuals, product registration, along with tech specs and troubleshooting steps.
Reddit
reddit.com › r/vizio_official › issues with vizio d series
r/VIZIO_Official on Reddit: Issues with Vizio D Series
August 8, 2019 -
For the last few weeks, I've had issues with my Smart TV where I turn it on with the remote and the power indicator light on the lower left corner will blink non-stop. So I'll immediately turn it back off, give it a few seconds, and turn it back on. I've also been having problems with needing to do a power cycle 1-2 times per week because it acts up, saying it's connected to wifi but wont connect to anything. I just got this TV for Christmas this past year. Is it normal for Vizios to do this or should I look into replacing it?
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I’ve been having the same problems! Hopefully some one knows
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I've tried three things that can fix some problems. Try them one at a time, then check before trying the next thing. Turn it on, then unplug it for 30 seconds. Turn it on, unplug it and hold the power button for 30 seconds, and plug it back in while still holding the power button. Do a factory reset through the settings. If none of those work, you may need physical repairs.
Videos
02:40
Solved: Vizio TV Not Turning On - Step-by-Step Troubleshooting ...
15:35
Vizio TV HAS Sound But NO Picture | Black Screen WITH Sound | 10-Min ...
04:24
VIZIO TV WON'T TURN ON/BLACK SCREEN, EASY FIX😮 - YouTube
07:12
The Vizio D Series 40 inch Smart TV with SmartCast - YouTube
00:51
The Ultimate Review Vizio D Series 40 Inch TV Pros, Cons, and Remote ...
13:32
Vizio D-Series TV Setup: Ports, Mounting, & Apps! (40" Version) ...
Good Sam Community
community.goodsam.com › good sam community › forums › rv must haves
Brand New Vizio 40 inch TV problem, HELP | Good Sam Community - 3404158
March 17, 2020 - They said it would cost me $100 if they sent out a Geek techie,...OR I could have another 40 inch Vizio, in the new sealed box. I connected the new one, with same results! I tried it with my two other Direct TV receivers, with same results. I replaced the co-ax cables, with same results,...NO SIGNAL. I connected, one by one, ALL my other TVs, total of five. They all receive Direct TV just fine. Is this model Vizio simply not compatible with Direct TV signal?
JustAnswer
justanswer.com › tv-repair › nhqdg-new-vizio-series-40-inch-tv-second-tv.html
Expert Solutions for Vizio D Series 40 Inch TV Issues | JustAnswer
Customer: We have a new Vizio d series 40 inch TV. It is a second TV located in a bedroom. We have a dish satellite receiver connected to the main TV. We are not able to connect the new one using the hdmi connection. Any suggestions? Technician's Assistant: I understand that you're having trouble connecting your new Vizio D Series 40 inch TV to your Dish satellite receiver using the HDMI connection.
Vizio Support
support.vizio.com › s › article › VIZIO-SmartCast-Troubleshooting
Article Detail
The VIZIO Support homepage provides the latest trending support topics and support videos, user manuals, product registration, along with tech specs and troubleshooting steps.
iFixit
ifixit.com › Answers › View › 745823 › vizio+d+seres+40in+tv+has+black+screen+and+then+powers+off
vizio d seres 40in tv has black screen and then powers off? - Vizio Television - iFixit
I have recently bought another main board for this model and installed and still same issue it turns on and i can see it powers on and if I use a light can see the vizio logo on screen but it will turn it self off a few seconds after i turn it on.
Tom's Guide
forums.tomsguide.com › home › electronics & wearables › streaming video & tvs
I have a Vizio TV model D40-D1 the remote won't work. And it don't have a power button on the TV. Help! | Tom's Guide Forum
November 7, 2017 - You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser. ... I have a Vizio TV that the remote won't work, there is no power button on the TV.
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@thkeith3rd this sounds like either a power board issue or a backlight array issue. Either way you would have to take it apart and take a closer look at the board. Make sure that there are no leaking, domed looking capacitors or any other obviously damaged components. Make sure that all cables are properly seated by removing them and the reseat. Check to make sure that there are no broken pins etc. on those contacts. after that you need a multimeter to measure the output on the different connectors and validate their values against those on the boards. Main issue I'd check is the connection of the LED's to the power board etc.
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If you have a corrupted flash drive in the usb port it will continue to power on and off. Remove your flash drive from the usb port and your television will work again immediately.
Best Buy
bestbuy.com › site › reviews › vizio-40-class-d-series-led-full-hd-smartcast-tv › 6288347
Customer Reviews: VIZIO 40" Class D-Series LED Full HD SmartCast TV D40F-G9 - Best Buy
VIZIO - 40" Class D-Series LED Full HD SmartCast TV
Discover a world of entertainment with this 40-inch VIZIO smart TV. It provides easy access to streaming apps such as Netflix and more than 100 free channels, and the Full HD resolution, full-array LED backlighting and effective refresh rate produce immersive image quality. This VIZIO smart TV has a USB port and HDMI inputs to connect additional media sources. ·
Price $39.99
Lifewire
lifewire.com › fix-vizio-tv-black-screen-of-death-4570963
From Darkness to Display: Repairing Your Vizio TV
August 28, 2025 - Replacing the power board might be needed, but you can do it yourself or call for help. If your Vizio TV displays the black screen of death without a known cause, don't worry—there may be solutions.
Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 3198293 › windows-10-causes-my-40-inch-vizio-d-series-to-tur
windows 10 causes my 40 inch Vizio D Series to turn off for 10 to 15 seconds when I am on the internet. Does not happen when watching Netflix - Microsoft Q&A
February 17, 2019 - My daughter bought me a 40 inch vizio d series right after black friday replacing an older monitor I was using with my computer. It worked great up until two weeks ago. First I had an audio out of sync by 3 seconds. I sent feedback. Next day sync was okay. I assumed some update was applied to fix it. Then later my tv started turning off for 10 to 15 seconds and then turning back on. Problem ...
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I have a Firestick and realized my Vizio was intermittently powering off and on when I was trying to control my television using the T.V.’s remote or buttons and not the firestick remote. I also tape off the I.R. sensor on the firestick remote or move it so the T.V.’s I.R. sensor doesn’t detect the remote. Problem solved. I don’t know if you’ve got a Firestick or not, but this is how I solved my issue. · I found the answer in this ifixit post: TV randomly turns on and off repeatedly
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Under Settings you will see CEC Settings. Turn off the CEC Function. This will be the root cause off the problem for many people as one of the connected devices is sending an improper CEC signal and causing the TV to turn off.
JustAnswer
justanswer.com › tv-repair › fvjt6-just-bought-vizio-40-inch-series-tv-unable.html
Expert Help for Setting Up Your Vizio 40 Inch D Series TV | JustAnswer
Sorry you're having problems. You will only be able to watch the Smart TV aspect of this TV with a router and an internet connection. Otherwise, you will need some sort of cable box, or antenna to connect to the TV in order to use it. That said, what is it that you're connecting to the TV? ... Understood. How is the DirecTv box connected to the TV? ... I bought one of those d series smart TV Vizio 40 inch I cannot seem to access my desktop Tower through the television
JustAnswer
justanswer.com › tv-repair › fqmhc-vizio-smart-tv-model-d40f-g9-won-t-turn.html
Troubleshooting Vizio D40f-G9 TV: Won't Turn On and Other Common Issues
D40f-G9 often shows faint power light and fails to fully power on or randomly shuts off. A fading power light on the Vizio D40f-G9 usually indicates a failing power supply board or capacitor issues.
Amazon
amazon.com › VIZIO-Chromecast-Streaming-Channels-D40f-J09 › dp › B09FB4JPS8
Amazon.com: VIZIO 40-inch D-Series Full HD 1080p Smart TV Chromecast Built-in Streaming Channels, D40f-J09, 2021 Model 40 inches (Renewed) : Electronics
V-Gaming Engine - Automatically makes the latest console gameplay more responsive with Auto Game Mode, Variable Refresh Rate, and the D-Series lowest input lag. VIZIO SmartCast - With lightning-fast interface and intuitive navigation, enjoy instant access to the best selection of apps from top-tier streaming services like Netflix, Disney+, YouTube, and many more right on the TV.