DIY LED TV Fix - Vizio LED Driver Board Replacement - Broken LED Backlight ● SWH Builds

[@shibadad6786]

Appreciate you taking the time to make this video good sir. Very helpful. I thought it was the flux capacitor this whole time 🤷‍♂️ You saved me a lot of trouble

[@swhammondbuildsreviews]

Hook it up to 1.21 gigawatts and see you back in 1955

[@DannyWilliamH]

I actually appreciate that you show what you did even though it wasn't necessary. There was info to learn in that section so it's appreciated.

[@swhammondbuildsreviews]

Glad it helped!

[@machocrx]

Would 4 strips not working cause other leds also not work ?​@@swhammondbuildsreviews

[@seanm9516]

This video is spot on, had the exact same issue with the lower left 1/4 of the screen being darker than the rest. ordered the LED driver board and Boom, fixed just like that. i love videos like this bc this prevented me from taking a gross amount of time replacing the led strips when i didnt need to. $19 part brand new and took about 5-7 min to replace. thanks for the Video!!

[@swhammondbuildsreviews]

Right on! Glad it worked for you.

[@gilbertoestrada135]

Having the same issues on my e70 e3 how did you find the board. Would it be the tcon?

[@MsLyssie07]

Where did you purchase the part from

[@seanm9516]

@@MsLyssie07 eBay with a 100% return policy

[@XADIENX]

yes where did you order your part(s) from ?

[@Richard-tt9rc]

This fixed my Vizio TV, I can't thank you enough!

[@swhammondbuildsreviews]

Bam! I love these types of comments. Glad it helped

[@Alwayz_Angry]

thank you for taking the time to make this video!! i have a vizio 70 inch v705h3 and have a slightly dark lower half as seen in another video but this may be the fix for me🙏🏽🙏🏽 i'll be shopping for a new led board hoping that fixes the problem. not looking forward to replacing the strips lol also a LED board for $30 vs $600 for a new 70inch is a no brainer

[@swhammondbuildsreviews]

Hope it does the trick!

[@eagleal777]

Thanks for posting this video. I did not see the tcon board initially, hidden under a plate used to hold the stand. I ordered two other boards, replaced and same still issue. Ordered the Tcon board and waiting for it to come in and crossing fingers that it fixes it.

[@williamfinley175]

Hello Thanks for the Video.. I had the identical issue with a large block of dark area in lower right of screen. First I replaced the power board with little no effect, then I took your suggestion and replaced the LED board. It showed a small improvement , but I noticed the longer the TV was on the more the image improved.. I still had some dark stripes and dark corner, but it was less noticeable. To my surprise after about 2 weeks of using TV the issue corrected itself. I was prepared to do the "deep dive" and completely disassemble the TV to replace the LED's buried on the back screen, but that is now not needed. I don't understand why the situation changed over time.. but thought I would post this, perhaps others can try just "burning in'" a new LED board by leaving the TV on for 24 or 48 hours. Usually circuit boards are digital , (they either work immediately, or they do not).. so I am mystified as to how my TV gradually improved, but for now I am happy, and the image is now nearly perfect with no noticeable dark background regions . Thanks again for the video on this issue.

[@swhammondbuildsreviews]

Wow, that is bizarre. Glad everything eventually started working for you.

[@tylerstrong1776]

Just found a 80 inch Vizio at a turnover we were doing getting ready for new Tennant and it comes on jist the left side is a little dark so I'm definitely keeping it and gonna try to get video board since I have nothing into the TV so far. Thanks for this video!

[@swhammondbuildsreviews]

Hope it works out! Def worth a shot

[@ccoder4953]

The easy way to troubleshoot this is to move the backlights around. Since the strips are all the same, as long as they didn't key the connectors, you should be able to just swap connectors for the different sections of backlight. If the problem area moves, then you know it's the board. If the problem area stays the same, then its the LED strips. Also, on some TVs, one bad LED can take out multiple LEDs. It just depends on how the strips are wired. Some TVs run many LEDs in series and even some strips (keeps the current down), so if one opens up, the whole string goes out, kind of like old Christmas lights. That can take out a section of the backlight.

[@RPG-oh1yf]

TO move the LED's around you have to take the bezel and screen off which is about 10 times as much work as removing just the rear cover of the TV. Testing the driver board outputs to the LED with a multi-meter to confirm no voltage output to the LEDs would be the best way.

[@ccoder4953]

@@RPG-oh1yf I don't mean physically move the LEDs. Move the connections to the LEDs from one port on the driver board to another. I did that on one I'm fixing. And it showed the driver board is likely fine, it's the LEDs (which sucks because now I have to take the panel apart and replace a bunch of LEDs). And indeed, tests on the LED strips showed bad LEDs, confirming the earlier diagnostic.

[@RPG-oh1yf]

@@ccoder4953 Ok, sorry for the misunderstanding. On my 65" vizio I'm trouble shooting there's only 2 harnesses that power the 12 LED strips and all of them are out and all went out within a month, little by little. I'm leaning driver board. Missing the power cable or I'd test them now. What I don't get is how do all the LED's fail at once in your case of it's NOT the driver board? Maybe the board also failed and overpowered them all and cooked them?

[@ccoder4953]

@@RPG-oh1yf Oh, that's easy. LEDs are often wired in series (like old Christmas lights). A common failure mode is for them to go open circuit. So, if one LED opens up, the whole string goes out. I had a panel do that once. Turned out it was just a few bad LEDs. It's also possible you have some LEDs in series and some in parallel. If you have some die (shorted or open can do it), it can cause more current to flow into the other parallel branches, stressing those LEDs more. See, LED drivers regulate current, not voltage. But unless it's pretty sophisticated (and it sounds like yours is not), they can only regulate the current of an entire series/parallel string. So, if one parallel string isn't doing the current it should, the other branches will have to do more. But that stresses those harder, so they are more likely to fail. What's weird is the new one I'm working on (with full array dimming, so much more complicated) has LEDs in series, but somehow bad LEDs aren't taking out a whole series string. Might be because the newer panel has 9V LEDs (I think) and the old one had more normal 3V LEDs. The 9V LEDs are internally quite a bit different - internally, they are several LEDs in series, where the 3V ones are just one. So, maybe they are more likely to fail shorted.

[@RPG-oh1yf]

@@ccoder4953 Interesting. Seems mine failed in 3 segments. First I lost about 1/4 of the backlight, then 3 weeks later we lost about another 1/2 of it and finally the last 1/4 went out. Seems like that should be LED drive board based on that 3 stage failure but hard to say. I am probably going to order a new board from Ebay, can't beat $5 shipped for a new salvaged board I need. IF that doesn't work I can pull the panel apart and check the LED strips.

[@bcmike0_135]

Thanks for the tip! Worth a try!

[@Mike-ym6rl]

I have the same problem with my Vizio TV. I have also discovered it's not the backlights, and could be the video board or a capacitor because my lights do come on once in awhile. So I know that the LED lights are not burnt out.

[@swhammondbuildsreviews]

Seems to be a somewhat common problem. When I did mine, the video board was about $20 - might be worth trying.

[@scott_forgot9875]

Great video. I was able to replace the LED driver board on my 65" Vizio m656-g4. Sadly it did not fix the problem. It was worth a try though! I was experiencing a similar issue with the lower-right quadrant going dark. I'm pretty bummed!

[@mws183]

I'm having the same issue with the same TV. My lights went out one by one to the point my whole screen is dark now. I've only had the TV for 9 months.

[@SheilaSmithPaparazzi]

Oh geez... our 75" same! 🤦🏼‍♀️ First bottom, then right side and quickly entire screen black. We have taken the back off to try to find a replacement board in hopes it works. At least we've had ours for two years.

[@deepdiscounts]

@@SheilaSmithPaparazzidid it work?

[@brandonupchurch7628]

I guess if you're not sure before you buy the part, you could just swap around the connections for the panel sections and see if a different one goes dark?

[@swhammondbuildsreviews]

Sounds logical. I'm not a pro at this stuff, just a guy trying to fix my broken crap.

[@tylerlowrance5279]

Is that the only way to test the board? It sounds simplest so just asking.

[@C70drvr]

I picked up a Vizio M80-D3 for free from work since one day the entire left side went dark and they had to replace the TV asap. The thing is, on the rare occasion, the thing will light up just fine. I know that there are 16 LED strips arranged in 2 banks of 8. Each of the 16 strips has its own connector. For the entire left side to go out, this must mean it's a power supply issue. I have the unit at a shop and they said to replace all the strips. I think they just wanted it out of their shop... I'll likely try replacing the LED driver board myself first and then go from there. Free TV!

[@swhammondbuildsreviews]

Right on! Yes, I would try the board first before the strips - especially if it's occasionally lighting up. Usually an LED either works, or it doesn't - which leads me to also think power supply / driver board. Good luck!

[@DaveHunterMusic]

I have a question I'm hoping you might know the answer to: My 60 inch Visio started with the lower left going darker, then stayed like that for months, then the upper left got dimmer, and finally now the whole screen is dark. So the question is can this be the driver board you are talking about? By the way, great video!

[@DmitryBabich]

Thank you for the video. I came out to the horizontal shades at the top and the middle. They both appeared at the same second. I assume, it is probably driver board, since 2 strips can't go out together. Right?

[@swhammondbuildsreviews]

Sounds like a reasonable assumption. The only way to know for sure is by testing them with a multi-meter. Thanks for watching!

[@nyderek3708]

Running into this similar issue. Backlights went out. Screen was black but you can see the display with a flashlight. Repairman put new black lights in. Three days later I get a black bar in the middle of the screen. Not a solid bar, but it’s pretty dim. He’s picking it back up. Said it’s the T-con board maybe.

[@ayospare1052]

I have the same problem and thank god I saw your video. I will it give a try. Where did you order the bideo board? Thank you very much!

[@bowercabin8540]

Great video thank you! If my Vizio has dim light the entire width of screen at the top, is that likely an LED strip up there?

[@swhammondbuildsreviews]

Sounds like a bad LED strip if it's a uniform outage across the screen. Good luck!

[@gene-allenmarshall244]

Thanks! I always wondered about that sectional darkness. Hope it’s like a $10 board. 😅

[@swhammondbuildsreviews]

Worth a shot! Best of luck

[@DaveHunterMusic]

UPDATE: As an update to my previous question, which I'll repeat below, I left the unit unplugged for a couple of days and the picture did come on, but dimly though, and only for 5 minutes...then dark again. Does this give anyone here a clue to whether this is the board, or the back lights? I would really appreciate anyone's input on this. Thanks Here is my previous post describing the initial symptoms: I have a question I'm hoping you might know the answer to: My 60 inch Visio started with the lower left going darker, then stayed like that for months, then the upper left got dimmer, and finally now the whole screen is dark. So the question is can this be the driver board you are talking about? By the way, great video!

[@frankfreely106]

Hello, Thanks for the video.. I have Vizio M70-D3 with one dark strip, and complete lower right corner dark. I replaced the power supply board first, with no change, or perhaps a very small improvement, I have the LED board on order for $30 from ebay coming, will let you know how that works.. but my expectation is it will eliminate the dark corner. wish me luck

[@swhammondbuildsreviews]

Hey, Frank-I hope it's a simple fix. You're right, my guess is that the new LED board will fix the square, but it sounds like you might have a strip out as well. I would certainly try replacing the board first and hope that fixes everything. Best of luck and let me know how it turns out!

[@joeparent8760]

Same model tv here....ordered a new/used led driver board...hopefully it works...

[@fxtwist5988]

@@joeparent8760 did it work ?

[@solatope11]

@@joeparent8760 did it work?

[@jesussantiago366]

Hello ....Thanks for the Video very helpus for me ..have good night

[@swhammondbuildsreviews]

Thanks for watching-hope it helped!

[@LanceIs55]

I have a VIZIO Model E70-C3 smart TV around 6 years old I think and recently the screen is divided into two sides down the middle. The right side seems fine but the left is a little darker with an even darker horizontal band running left to right in the middle of that left half. Ant thoughts?

[@ccollins9981]

Exactly what I needed thank you for doing this!

[@swhammondbuildsreviews]

Right on! Hope it works for you.

[@brianman4351]

Thanks for video. My Vizio has dark squares in the 4 corners of the TV. Do you think it's the video board ?

[@nigelwilliams4800]

It can be a right pain at times, could be led driver, t-con, psu, main...a led tester is a must... Or dc 3v battery save you...

[@swhammondbuildsreviews]

I agree-the only way to know for sure if by chasing possible issues with a multi-meter. And yes, the battery trick works for checking LEDs, haha.

[@markscrima2439]

TY, EXCELLENT VIDEO... MY 14 YR OLD PHILIPS 47PFL9732D/37 IS NO LONGER AVAIL FOR PARTS...UGH...

[@swhammondbuildsreviews]

Bummah!

[@red_zmaja9951]

And what about upper left, middle right and bottom left quadrant? Those quadrants are flashing. I’ve replaced power board and main board. Could it be a bad backlights?

[@krazyunicorn9538]

Thank you for this.

[@raymond5068]

I'm having issues with my Vizio p55-f1 with a full array issue, you think will fix my problem if I replace.the circuit.board of my tv.

[@Ryanfiske10]

My screen kinda flickers and its the left bottom and upper also the right top corner is all dark the only thing thats not dark but seems dim is my bottim right corner but the flicker kind of makes me wonder if thats a board problem not a led issue what do u think i have a e65-1 vizio

[@jkitto2008]

I have random black spots/large black splotches randomly appearing all over screen. Once TV warms up it stops. Do you think this fix would help me?

[@DevotedMomTravel]

Thankyou. This was extremely helpful.

[@swhammondbuildsreviews]

Right on! Glad it helped.

[@jesusramirez000]

Mine is equally the same but the opposite the little rectangle that doesn't light up in my tv does light up but not all the other LEDs

[@RPG-oh1yf]

Seems showing up to test that the individual driver board wires to each LED strip actually have no voltage when TV is on would definitively confirm the driver board? I'm going to test the outputs first.

[@mike2021247]

Mine is just like yours except it's upper left. Could this be the and issue?

[@LanceIs55]

Did you order the board from vizio or did you buy something generic? How much?

[@larkrafuse5513]

we have a d55 e-0 that has the same problem .. we opened it up but it does not have the same middle component .. just has a power board on side and then a main larger green board on the other side. would it be the main board that is defective ? since it still powers up etc ?

[@mateofmilk]

Love this video and I hope it’s my issue. I have a Vizio E 70- E3. It has different boards on the back than the one in this video. (only 3 boards). My top right quadrant is very dark in my bottom left quadrant is starting to go dark. I can buy a Vizio E70-E3 T-Con Display Driver Control Board a921 on eBay for $20 and I’m willing to take the risk. Just wanted to get your opinion on if you think replacing this part might do the trick.

[@swhammondbuildsreviews]

Hmm - my assumption is either the board works, or it doesn't. The "starting to go dark" concerns me. I don't think that as a quadrant fails, it's a slow process where things begin to dim. I'm guessing it's an all or nothing situation. The only way to know for sure if checking the video board with a multi-meter. If the fading quadrant is getting proper voltage, my next guess would be failing LEDs or a power supply issue. Hope that helps!

[@maxwelllizotte7568]

Did this work? I have the same model

[@mateofmilk]

I ended up just buying the LED lights and that did the trick, I did not buy the board.

[@angelsalazar7885]

I have a vizio with no LED and no sound there's picture when I put a flash light to the screen what can be the issue some have said LEDs themselves and others had said main board is there any info is greatly appreciated

[@jeffpc34]

What if I have 3 out of the four quadrants dark? Will it be the same? Just replace the board.

[@swhammondbuildsreviews]

The only way to know for sure is by testing the board with a multi-meter.

[@simonson5182]

Can I replace LED Backlight of Vizio VW42L HDTV10A with Vizio E420i-A0? Both TV are Vizio Brand with 42" Screen.

[@charcoalcharizd]

What if I have both issues, a dim quadrant and 3 dim lines. My TV is slowly dieing. Please help me.

[@BRENDAJASON1]

Well ours was the same thing had dark spots in the corners then one morning the tv went out I can turn the power on and take a flash light and see the Vizio symbol come in in the center but the power light goes back off. If I can’t get it to work I’ve got a 12 gauge that will permanently fix the problem

[@swhammondbuildsreviews]

I highly recommend the 12 gauge, haha

[@BRENDAJASON1]

@@swhammondbuildsreviews well bought a hi sense tv from someone KZbin videos keeps sticking that one might be next to feel the gauge

[@bobbyjoesugar]

Thank you! I am going to be trying this!

[@swhammondbuildsreviews]

Right on. Hope it works out for you!

[@jeffadams6419]

I have this tv it’s only 3yrs old and have the same issue. Mine is the lower left corner and the upper right corner

[@rustypancamo9606]

I have the Vizio M656 H4. I originally had the fading in the top right quadrant. I obtained a new LED Driver Board, and replaced. The "dimming" continued, and over the past couple of weeks, I am getting "dimming" in the lower left quadrant. Was I supplied with a "defective" LED driver board, or is there another problem? Thanks. (by the way.......Vizio tech said, " just go buy another tv!"

[@swhammondbuildsreviews]

¯\_(ツ)_/¯ - I'm just a dude who tinkers. Could be a power supply issue to the quadrants? Hope you figure it out though. Terrible about the Vizio tech!!!

[@azboneman]

Good video. I have a Vizio P652ui-B2 and I'm getting a dark shadow bar across the entire top and about 2/3 of the way down the screen. Again across the entire screen. The rest of the screen is bright. I've assumed that it's bad LED strips (which are no longer available). What is your opinion? Thanks.

[@swhammondbuildsreviews]

I'm not an expert, but yes-that sounds like a bad LED strip.

[@mauriciofernandez740]

Thank you very much for this video

[@byungkuk1]

Great informative video. I have a small strip of dark spot right smack in the middle of the TV.. there was another lower line but that has disappeared.. Would this be a LED strip or a board issue? It's not an entire area but a "line" where I imagine some of those LED bulbs went out? It's a M658-G1 less than two years old (wtf). Thank you!

[@swhammondbuildsreviews]

I'm not a pro at any of this. The only way to know for sure is by checking the video board and LEDs with a multi-meter. Good luck!

[@maxwelllizotte7568]

I opened my TV and it's a bit different could you advise on the part needed? No sure how to add a picture here

[@Diablo20069]

Hey man. I have a smaller 39 inch vizio e320i-b2 the whole thing is dark but I can see a picture when shine a flashlight at a angle on it. Do you think it could be the board making all the backlights not work?

[@unknownwolf8555]

I have a 2022 d40f-j09 it keeps dimming in and out

[@AbidHussain-qh2ms]

Sir , jvc has cCFLbaclight and it does not turning on۔ can I use same cCFLbaclight power inverter 94v to glow leds. (I will divide 3 or 6v led into 94v) will it work, please advise

[@swhammondbuildsreviews]

¯\_(ツ)_/¯ I'm just a dude who tinkers

[@tylerlowrance5279]

What if none of the back lighting is working? Is there a way to test the video board before disassembly to reach the LEDs ?

[@swhammondbuildsreviews]

¯\_(ツ)_/¯ I'm just a dude who tinkers. I assume you could test the power output / continuity of the video board with a multi-meter

[@chrisflowers-smoker154]

Mine is the Bottom being Dimmed. Upper is good, but the Lower Half of the Screen starts being Dim.

[@adammartinez2869]

It looks like there's a wire hanging on the inside when you took the back off?

[@lilmango6281]

I can’t find the part for a v755-j04 anyone know where I can get one?

[@marloneckstein4346]

Morning I hv a vizio 55 inch getting sound but picture only at the top right an d rest of d tv dark ,please help

[@obiezeigwe1839]

Where can i find parts in America? I looked online & all i see are ebay used parts i can't trust. I am looking for Vizio 75inch led driver board.

[@therealdeadpen]

It would be nice to know what SMD LED diode that comes in these along with the degree of the lens they use. I do have a dead strip so I guess I'll just order a stock replacement (only thing available) and wait.

[@swhammondbuildsreviews]

Yeah, I'm not sure. I didn't examine them or try to figure that out when I tore mine apart. Good luck!

[@funkstauzz]

My lower left and upper right quadrant are both dim, the lower left flickers on occasionally . What is actually failing on the video board itself? Is there a way to repair the board I have?

[@hbtdawgz1688]

Is this the same if two quadrants are doing this and flickering? I have the 49" Vizio and the bottom left and top right are both doing this.

[@swhammondbuildsreviews]

Possibly-what you describe sounds like a video board issue and not an LED strip issue.

[@hbtdawgz1688]

Any way in particular that you would recommend testing this? The picture isn't messed up or absent, its just the dim spots in the corners and a bit of light flicker.

[@swhammondbuildsreviews]

@@hbtdawgz1688 it can be a pain, but you'll have to tear the TV down and expose the LED strips. Test the LED strips individually, you can use the battery trick (kzbin.info/www/bejne/aqGuZ6JoebJ_jbM). If all the strips are lighting up using the tester, your LED strips are working properly and it's a driver board / power supply issue. If the LED strips are not working properly, you would then need to replace the LED strips. Good luck!

[@hbtdawgz1688]

@@swhammondbuildsreviews Well I didn't have any of those batteries on hand but I did have a 6V battery pack and I applied it to each light. Definitely have some out. Only had maybe 4 strips where there wasn't at least one light out. Thanks for the advice.

[@swhammondbuildsreviews]

@@hbtdawgz1688 Well, the good news is that you were able to chase down the problem! You've already done the hard part-swapping out the LED strips is pretty easy. Glad you're figuring it out and getting it fixed.

[@LS11971]

Mine has alternating black areas. Top right, left middle, bottom right, but mostly noticeable when the screen is darker and not as bad when the screen is light. Do you think this is still a driver board issue or more of an LED issue? All these areas went out at the same time so I would think more of a driver board issue since it is highly unlikely that all those areas go out at the same time.

[@swhammondbuildsreviews]

I am not a pro at this stuff - the only tv I've ever fixed is the one you see in this video. But yes, given what you've told me, it sounds more like a driver board issue - or even a motherboard issue - rather than an LED issue. Sorry I'm not better help!

[@fi4007]

SW Hammond, great video to not to waste time and money. Gotta question bro my vizio have darkness on upper right(just like your case) and started of with lower left only 1 strop but turned into full block now so what u think is it hopefully just video board or lead backlight strips? Thanks for your answer.

[@swhammondbuildsreviews]

Thanks for watching. Could be a power supply or video board issue. It doesn't sound like it's the LEDs the way you describe-too weird for all of your strips to "burn" out all together like that. I would try swapping the video board first, it's cheap and easy, and go from there. You could away get a multimeter out and try to chase down the problem that way. Again, I'm not a pro at this stuff-just some dude that needed to fix their TV!

[@fi4007]

@@swhammondbuildsreviews Thanks for getting back, is there way for me to show u my issue by sending photo? Tv itself 3 years old initially it started by becoming 1 strip going dark then turning whole block. So right now it is upper right, lower left both are whole block and since last texting you I ve got upper left only 1 strip dark, do u still think it is not led strip issue and where to get part? I wish I could chase the issue by checking but Im not an electrician so I kind of rely on your experts, thanks.

[@swhammondbuildsreviews]

@@fi4007 I'm really not an expert at this. There's no way I could tell you what was wrong by looking at a photo. I did mine wrong the first time, thinking it was an LED strip problem. After replacing all of the LEDs, I discovered that it was a video board issue. That's why I made the video, to save people the hassle of replacing LED strips. It sounds like you may have several issues going on? My advice is to read forums and watch more KZbin videos with similar problems to yours. In the description I put a link to the part store where I bought my video board. Of course, your part will be different depending on your model. Good luck!

[@fi4007]

@@swhammondbuildsreviews Thanks for your response.

[@Joker-jg4vd]

Where did you order the part from?

[@jkitto2008]

There's a link in the description

[@JSKenterprise]

Thanks for this video, my tv has a light blueish tint all over. Where it should be white, it is light bluiesh. Do you think it could be the video board?

[@swhammondbuildsreviews]

I'm not sure. I'm not a pro at this stuff, just a dude who tinkers. Maybe check forums.

[@TheSteadyGardener]

@@swhammondbuildsreviews ok, thanks for responding back to my question.

[@Snipzors]

Dealing with an issue with my Vizio M55 E0, after about 10 minutes the whole screen goes black but is still on (can see the glow) thought it was a power issue and just replaced the power board, but still blinking out after about 10 minutes. If I turn off the tv and back on it will work for a short time but then go out again. Just ordered the Led driver board hoping that's the issue. Any ideas or suggestions are welcome.

[@danflink326]

Did that fix your tv, I have the same problem

[@tonycowser1843]

How about if my Vizio has sound, but the screen is black??

[@anthonysams6960]

I have a vizio e70 e3 I TV shows everywhere but the right side is dimmer top to bottom should I replace LEDs or the board

[@swhammondbuildsreviews]

Impossible to know for sure-you'll have to take a multi-meter to test the board and LED strips. If the board isn't providing current to the LED strips, it's likely a bad board / transistor. If the board is providing current, it's likely bad LED strips. You can gamble and cheaply / easily replace the board if you feel that you have a uniform outage like what is happening in this video. Replacing LED strips is more involved.

[@ashenick]

Tried this with a Vizio M75-C1 - realized there were two drivers so I switched each one with the new part and no luck. However, my symptoms are that the upper half of the TV is dim and when unplugging the TV from the wall and plugging back in, it goes away for that session. I don't think it's the strips but back to the drawing board.

[@swhammondbuildsreviews]

Could be a power supply issue. Maybe get the voltmeter out and try to chase it down?

[@Mason32800]

I have a similar Vizio model and it has the same problem in the top right corner. Only difference is that it’s not all the time. Sometimes it works perfectly fine other times not. Any idea if it’s the leds or the controller board?

[@ychongy]

My vizio 75in has a similar issue. Top right and it looks smaller dark spot. Half the size of the on in this video. Almost like a shadow burn in.. did you ever find a fix?

[@williamflores7251]

Would that also make the entire screen blink sometimes?

[@swhammondbuildsreviews]

A different issue, but could still be the video board. ¯\_(ツ)_/¯ I'm just a dude who tinkers

[@eugenesalario3946]

WHAT CAUSES WHITE SPOTS ON MY SCREEN VISIO 65 " COULD IT BE LED DRIVE OTHER THEN THAT TV WORKS GREAT

[@JrMiles-cb2oh]

Yes what is the device u are using to test the lights

[@swhammondbuildsreviews]

I taped together some 9V batteries and wire and touched the LED leads to test the lights. There's actual products you can buy to do this, or search KZbin for this ghetto trick.

[@ViperVenom98]

Hey just curious. I have a sceptre monitor for my pc and I’m getting a similar issue. I’m just curious if this same issue can happen with monitors?

[@swhammondbuildsreviews]

I'd assume they're pretty similar. LED TVs and LED monitors are basically the same thing - monitors usually have a little more robust hardware and faster refresh rates. It's worth trying, but I can't promise anything as I don't know anything about your particular monitor.

[@inhisthorns]

Where can I find the led strips.

[@susans8749]

I have Vizio M55-C2. On the left half of the screen, I have a constant, small dark patch, and after an hour or two i have dark patches all over the left half of the screen. Turning the TV off and then back on, temporarily fixes the multiple dark patches on the left side of the screen (leaving just a small dark area again). I've tried muliple versions of power off resets and played with resets in the display settings. I can be watching the TV and very suddenly the patches appear within an hour or two...then recycling the power solves the most of it temporarily. I believe I either have bad backlight strips and/or bad led driver board. Any opinion? Thanks -Herb

[@swhammondbuildsreviews]

It sounds like you have it narrowed down to the two likely culprits. The only way to know for sure is to tear it down and check both the LED strips and video board with a multi-meter. With the lights coming back on after power cycling, it makes me think that LEDs aren't burned out - it sounds more like a video board issue - but that's just a guess. Good luck!

[@jeffpc34]

Had each of the quadrants go out. Replaced the driver board and came on for about a minute. Now, it's black again. I'm assuming it's the led back lights now???

[@swhammondbuildsreviews]

The only way to know for sure is by testing the LED strips and video board with a multi-meter, and possibly back to the power supply. If your LED lights came back on at all after replacing the video board, it doesn't sound like the LED strips are broken. Possibly something is overloading the video board and keeps frying it. Just guesses, I'm not a pro at this stuff. Possibly consider replacing capacitors rather than the entire video board.

[@Schutzhund26]

My quadrant was dark. I ordered another board and it is still dark. Only top left quadrant. The repair was easy like you said but it didn’t fix my prob.

[@swhammondbuildsreviews]

Bummer. Only way to know where the problem is for sure is by checking LED's and driver board with a multi-meter.

[@Schutzhund26]

@@swhammondbuildsreviews would love to chat with ya Jeff Hayse on FB

[@Schutzhund26]

@@swhammondbuildsreviews I suscribed.

[@jeffcibulka4186]

Thanks Brother

[@peterngwu5979]

I bought the part, opened my 65 Inc vizio tv but mine is different from yours. I wish I can send you a picture. What can I do?

[@swhammondbuildsreviews]

I'm not a "tech support" guy - even if I saw the pic, I'd have no idea what I'm looking at. I just tinker, try to fix things when they break, and post an occasional video when I think others will find it helpful. My best is advice is to hit up the forums. Good luck!

[@MrE_]

My tv has a t-con board, a power supply board, and a main motherboard. Which one would be the issue?

[@swhammondbuildsreviews]

I'm not sure. My TV had a specific video driver board.

[@donrumph1]

My problem exactly. Thank You.

[@swhammondbuildsreviews]

Glad it helped!

[@pedroalvarez5660]

I have a 55 inch vizio tv and it has a small spot that is darker than the rest of the tv and flickers brighter every other couple of seconds any idea on what it could be?

[@swhammondbuildsreviews]

Not sure?? I'm not a pro at this, just a guy who tinkers. Search the forums or Reddit.

[@sparklesthecat6507]

On my vizio the top part has plenty of light but the bottom part is dark.

[@datesterman]

I have a Vizio P65-F1 which needed a main replacement. I replaced the main but not with the exact model #, the TV had a -T and I bought a -K which I have done before and seen other do. The TV now works fine but I am seeing the same problem you encountered but in my case the shaded spots move around depending on what is on the screen. Clearly the TV is trying to adjust the backlight/Dimming but in the wrong spots, I am guessing this has something to do with the different board model #. I am able to temporarily resolve this issue but setting the Picture Mode to Computer. I went through all menu settings including the Service menu and see nothing related to Panel or Calibration. Any suggestions ?

[@datesterman]

For now disabling Active Full Array resolves the issue regarding of the Picture mode. I am going to guess this has something to do with the different model # board not completely matching the rest of the system/panel.

[@swhammondbuildsreviews]

I would assume it's the different model board as well. Glad you figured out a workaround with disabling active full array.

[@tkcoyote9376]

What do you think is wrong with my TV My TV won't stop flickering its every 5 to 10 seconds it will flicker I've opened it up to see if it had a loose connection but I'm still unsure

[@swhammondbuildsreviews]

I have no idea... I'm not a pro tv repair man - just a dude who had to fix his broken junk.

[@XADIENX]

did you figure this out ?

[@Jmacatac]

I just shook my tv one good time and it worked, granted after several shakes and like several hours. My flat screen is on a swivel stand, and I just kept turning the swivel back and forth and; back and forth; then I shook it one good time and it worked, at least for now. I didn’t have to pull it apart. Turn it off and on a bunch of times. This happens a lot with my tv and all it takes is a good shaking and it works again. So, if that is the case, is it really the LED board, maybe it’s faulty, but it isn’t completely shot!

[@swhammondbuildsreviews]

Haha, much easier than what I did!

[@fxtwist5988]

So would this also be called the the main board on my Vizio? Because on mine it looks different , it has the hdmi ports together with the main board ?? Also having very similar issue just dimming spot is on the bottom right corner..

[@swhammondbuildsreviews]

No, I believe the main board is usually different from the video board.

[@bucket1305]

Excellent video. I subscribed.

[@swhammondbuildsreviews]

Right on! Thanks

[@tessp5497]

My vizio doesnt display anything, I was told by tech support the backlit LED doesnt work. Is it worth fixing this issue?

[@swhammondbuildsreviews]

Is the juice worth the squeeze... it's an age old question.

[@richardv3321]

My tv is the opposite. I have one quarter of the tv bright and the other three quarters dark. Do you think it's the same issue??? I have a 70" e70-e3

[@swhammondbuildsreviews]

If it's a uniform outage as you describe-it makes me think it's the video board. The only way to know for sure is by taking it all apart and testing the LED strips...

[@Black_Jesus3005]

Long shot. The top section of my vizio D55-F2 went dark. When i go to menu>timer> and select blank screen. It goes dark like it should. And when I hit a button to bring it back to light the top is lit then goes back dark in a few seconds. Could it just be the board if will light up then go dark?

[@swhammondbuildsreviews]

🤷‍♂️

[@NoSpamForYou]

Maybe a bad capacitor or transistor that powers that led strip? Or a bad connection somewhere. Something can't sustain the power flow. You could try baking your boards to see if it fixes the problem, maybe a bad solder joint somewhere.

[@richardholtan4536]

I have the same issue

[@brianhuntington6347]

Hey everyone, i have a 70in visio. My situation is kindof the same, wanted to see if mine is as simple. My top left section has what looks like the first 3 strips are dark skip one and then another dark strip. Do you guys think its the led board or possibly somthing else??? Please help!

[@swhammondbuildsreviews]

Sounds like you have LED light strips that have gone out. If it were the video board, it would be entire sections.

[@joeczajkowski2196]

My top row(s) seem to be out, would this be related to the motherboard? It's not a quarter of the screen, it's the top hslf.

[@ChadMees]

not sure if you have solved your issue or not but I picked up a E60-E3 and the entire screen was dim. after disassembling it I noticed the connector for the backlight was a little burnt. If I wiggled this connection the entire screen lights up. if I wiggle it a little more the top row goes dim. Wiggling it once again and it works properly. I took a toothbrush and some rubbing alcohol to clean the connectors and now it is working 99% of the time. It occasionally will dim but comes right back!

[@joeczajkowski2196]

@@ChadMees I did, it was the LED strips. I found a set on ebay and replaced all of them. Works great (for now)! Thanks

[@jesuspedraza3622]

I have a question the whole left side is darker on my tv could this be the issue or the actual led strips ? What’s your thoughts?

[@swhammondbuildsreviews]

I have no way of knowing-I'm not a pro at this. Your guess is as good as mine. The only way to know for sure is to tear it down and test everything with a volt meter. Wish I was better help!

[@stevemalone6012]

I have a 70" vizio. The whole screen went dark, but has a glow, and there's still audio. At the right angle I can see some sort of movement. I see no menu boxes pop up. What may this be?

[@swhammondbuildsreviews]

A broken TV? Haha

[@dajunjiet]

Smart. Problem. Gonna take it apart today

[@stevemalone6012]

@@swhammondbuildsreviews lol Thanks for info, man.

[@wilzedens8676]

I have a 60" Smart Vizio. About 1/4 of the right side of the screen is darkened, yes you still can see a picture through the darkened portion. Is it possible the T-Con board is responsible for my unfortunate luck? I have replaced the backlights already. I am just looking for some positive answers for my 60" Vizio, before I recycle it. Anybody here have the same or similar situation before?? Please help me.

[@swhammondbuildsreviews]

Not sure the t-con board is responsible for your unfortunate luck - you may be been cursed? Someone cursed me once, they made it so I caught every red light. Super annoying. Find a good witch doctor. As far as the tv, for around $20 I'd try replacing the video board before trashing it. But, I'm also just a dude on the internet who's made a lot of poor life choices. That whole "grain of salt" thing...