T-Con Board RUNTK5261 Test - How to Find Faulty Component Showing Bad TV Panel

[@kl1492]

Is this lesson specifically for this model? Or can it be universally applied? I'm looking at my T-Con board and I see 5 components. We can just test any one of them?

[@pervaizalam50]

HI, I have Vizio E70-E3 model, first few of the LED strips went bad and I had picture and sound with dark areas on the screen when watching the TV. I replaced all the LED strips but now I am not getting any picture nor the sound. I need some help to determine whether it's a T-Con or main driver board and I have no idea how to do that.

[@JonathanCintronTV]

Hi, let’s see if you can help me. My TCL Roku TV started showing a black cloud on one side of the tv then it started showing color lines. I changed the tcon board for a new one. The lines stoped showing but now I only see a white screen. No image.

[@raptorrob57]

okay. but what can I do if the TV Panel is bad?

[@richiej4710]

Hi.. Ive just been given a 50inch jvc fire tv with lines horizontal and vertical, with the picture coming back and then flickering to lines and so on. Ive disconnected one ribbon and one half of the screen doesn't flicker, then when I plug the other side in the flickering returns. Ive swapped the ribbons across to rule out the ribbon and I get the same flickering result. My question is regarding the said failed chips that you tested, do they fail without a deeper seated issue? Like poorly made for example? Assuming these parts cost peanuts to produce in China... Im tempted to just throw another Tcon in and take a chance. Cheers

[@clintonbeasy6609]

Shop jimmy I unplug right side of tcon board and no image on left side what does that mean are my did gate the issue?

[@ccc822007]

Would replacing the part fix the board or would it require more than replacing the bad part?

[@clems6989]

It depends. The components can fail. Sometimes the failed part is due to a deeper issue.

[@joeripelgrims8900]

So if the T-con board is bad, there's no use in replacing it? Seeing as apparently in 75% of cases, the panel caused it and will cause it again.

[@Custom3dPrinting4U]

I like how he doesn't answer your question which makes complete sense. Replacing it saying the panel will damage it lmao what

[@crashcamchronicles]

But you can try only replacing this transistor and if it goes bad again you know it is the panel....

[@taomibaobao]

Sony, 50w700b, no picture, got sound, got back light, remote control can change channel, possible tcon board issue?

[@gassprint1]

Curious to why you don't have an lcd screen panel tester.

[@obinna6490]

Hi im have a telefunken l55u300q the backlight is working good but no picture no sounds dark blue screen..pls i need your help

[@MrJammor]

Is that MOSFET component he is testing? Or is it a diode?

[@thepiecesfit5049]

If the diode test (drain and source) measures .43, but the drain measurement while the tv powers on very low does that still mean the panel is bad? Dealing with an OLED where its power drops before it turns on. I’ve replaced the t-con, mainboard and power supply and nothing seems to help.

[@tonymorse4573]

What if your board doesn't have this component on it at all. how do you test it thanks

[@walker55able]

Hi Shop Jimmy thanks for this help however the Tcon board on the JVC model I am restoring does not have

[@walker55able]

That particular component it smcaps sm resitors and chips !

[@scottdinich4212]

is there a clue if the panel is bad? Example, I can see an image using the flashlight test, so the panel should be good?

[@TampaTec]

great video, really helpful, thanks greg!

[@ldonaldson780]

great videos from your channel as well my friend I've learned a lot from both of these great channels thanks peace.

[@rockjoymanong6466]

How to repiar T CON BOARD MODEL#BX3413TPZ

[@braydencason8359]

you probably dont care but if you are stoned like me atm you can stream all the new movies on Instaflixxer. Have been watching with my brother these days =)

[@moisesreid283]

@Brayden Cason yup, I have been using instaflixxer for months myself =)

[@thijstlam]

Hi, i have a problem with a Philips 42PFL7685H/12: after putting on the TV you can see the Philips logo and after about 10 minutes the TV works fine with no problems. When its hot in the area the time is a lot shorter. I have already replaced the T-con board (6807-0309c) after that, the TV give only black and grey vertical stripes, for ever..

[@madsjuncker6592]

Hello friend Does the problem also exist on t-con board from LG tv ?

[@nicholasgerman5376]

I have a visio m50 and true picture just shakes up and down and I can’t figure out the problem. Do you know what causes shaking and jumpy ness it’s like double image kinda thing.

[@fathergratwick]

I have repaired about a dozen sharp paneled vizios with this bad panel issue by cutting the buffering chips off of the bad side of the panel with a razor knife after replacing the tcon. one of these sets gets used a lot in my bar and has been working fine for over 2 years since this repair. one out of the dozen has come back as failed afterwards.

[@frankbarbaro5447]

Thank you for your great input. I decided to unplug half the T-Con connection and now this made right half of the panel work. Could this be a Tcom or cabling or panel problem? At least I now know the power supply is good and half the the tcom is good as well as the Logic main board as I have all menu controls. What do think I should do ?

[@fathergratwick]

@@frankbarbaro5447 At this point with your results, I would cut the flexible ribbon and IC buffer chips off the SIDE of the lcd panel that doesnt work. you have nothing to lose You may actually be able to see which chip failed but you need to remove all from the bad side not just one.

[@fathergratwick]

it is lso possible the damage to the lcd panel is on the board attached to the panel where the tcon ribbon plugs in. in that case I do not know of a way to save the panel. I do not believe its a tcon issue your having. could be ribbon cable, you can try cleaning the contacts.

[@frankbarbaro5447]

@@fathergratwick That's a really good idea. (As I have nothing to loose) Ill start by removing the IC buffer chips. Ill keep you posted. If I cut the ribbon though its game over. I could never repair that. lol

[@fathergratwick]

@@frankbarbaro5447 I just run the razor dont the whole side of the panel and remove all the ic chips with the fexible material its attached too. you need to remove them all from the whole bad side or it wont work.

[@canveraaccadia485]

On sony kd-49x7000e how can I know if the panel is bad?

[@peterduxbury927]

75% chance that the Panel is bad. But no defined statement on what actually happens to make the Panel bad. Is it a mechanical issue (like a cracked Panel)? Is it the bonding failure of electrical connections to the Panel Itself? Is the Panel drawing too much current for some reason?? I wish that this relationship between the TCon and the Panel had been discussed in better detail.

[@Kp-jq6vi]

I have sony xbr-65x900b at first I had no backlights but sound replaced the power supply board now I have backlights and sound but no image please help.

[@William51115]

I have a Samsung tv and the t-con diode keeps burning out. I've tried 3 boards. I didn't know what to do and for an experiment I tried powering it up with the diode removed and the TV turned on and it seems to be working fine. I wonder if it will cause problems in the future. only time will tell

[@thunderbear4341]

ok, I give, what is the part number for the bad transistor - I don't want to buy the whole T-Con board when I can just replace the bad transistor, and mine does show it's bad.

[@darrylfrench8541]

On my T Con board there is a white block with a stamp QB411V . Also printed on board , model: 30/37/42/47/55 FHD TM240 Ver 0.4 Is there a replacement board for this T Con board. Checked fuse, it is OK

[@josealeman691]

Drain and source ?for the diode you mean anode and cathode

[@RajibDas-mo7lm]

What's the difference between T-Con board and Scaler boards?

[@darrylfrench8541]

The T Con board on my Vizio M3D550KD does not have Mosfet transistor, so what is the next step in testing?

[@marksreef9688]

Lots of great questions. Too bad they have no answers.

[@modernarchive7502]

what's another name for the tv panel?

[@AaronDorman]

What if the gate only shows 1v instead of 3.5v?

[@j94526]

I checked those components, and all were bad. What do I do if the TV panel is the problem? Can that be replaced or is the tv finished?

[@TheSun_89]

Panel is bad, buy a new tv.

[@TheSun_89]

exactly. I will never buy vizio over 60 inches

[@georgeandrews8676]

what if you get a really HIGH reading on the drain with power on?

[@dougjacobson829]

Samson 60 in smart tv power up blk screen, 15 20 sec half screen slowly comes on very grainy then 2nd side all vertical lines slowly gets better 1st side gets dark after 2 3 mins turn off power turn back on then excellent seems like 1 or both sides have to warm up. but wont get good until power off then on.

[@gloriacafferty3463]

i gordon meant 75 percent and 25 but still what do u mean by panal ???????

[@robertkomar8196]

Vizio E420-A0 does not have a T-Con mounted to Chassis back side. Will a Bad Panel not allow the TV to Turn On. ?

[@BogomirPanic]

Hello, I need help for Samsung LE32D550: the image periodically shakes and gently flashes. When it does not shake it all is ok. The TV is on service due to the vertical tape on the screen (no picture), this is solved by removing the damage to the T-CON flat cable!

[@PMCPRODUCTIONS1690]

So if the panel is bad the tv is scrap then ?

[@MWD1991]

How about for an 55EG9100?

[@gordontrainer]

Why don't u specifically say what u mean by tv panel caused problems. 5% chance says 95% chance it didn't create issues. HELP..

[@MCoblentz62]

by "Panel", he means the whole display, SUS, Buffers and all

[@nathandrawdy]

Mark Cob Hey this is old but I'm confirming that if the TCon board is bad, that replacing the motherboard and the TCon might NOT fix it because the "panel" means other components as well that could be the issue.

[@gordontrainer]

@@nathandrawdy i fixed 3 tv,s really easy . Although WHATEVER board it is its 100 bucks an u can by one at fb market place for 40

[@peterduxbury927]

I thought the same thing as you, and (yet) not much is written about the Panel being 75% cause of all T-Con failures. This should have been better explained.

[@gordontrainer]

I've found thi's best. On tv there is only two boards My mom's I figured out what board . Googled board bought it tv worked great . That saudering i Boards is tough

[@bigmaw369]

Are you guys every going to get the Vizio E470i-A0 Main Board & 12 Strip LED's and Board back in stock? I've set the in stock alert, but you guy's have been out of stock for three months. Just curious when they might be back in. But anyway, love your videos very helpful keep up the good work. Thanks!

[@markfothebeast]

What in the screen panel causes board failure? Is it one or several of the panel connections (also called tabs) that heat up and lose continuity?

[@marksreef9688]

Ever figure that out?

[@MrJammor]

@@marksreef9688 Cricket. Cricket

[@byermoor2]

i have a Bush 50"LED tv it has stopped turning on ,all i have is the red standby light ,all caps look fine HELP please

[@joannegavlick6525]

Have a Samsung Smart Tv model number UN65H7100AFXZA version TH01 and one day when watching TV it just goes blank with no sound...tried turning back on with remote but no response from TV...I unplugged TV to try and reset...when I turned power on Smart TV comes on screen then goes away and I am left with blue screen that looks almost black and dark. At a loss for what is wrong and any help is appreciated.

[@andresb2834]

What is The componente ?

[@rhondalarson8854]

I have a sony bravia KD55X750F tv it wont turn on and there is noled light. ready changed the power supply board and that didn't fix it what do i do

[@rhondalarson8854]

and before it completely stopped working it use to just shut off by it self

[@laurentiustoica4019]

Bro, Hitachi 43hk6t74u. Cant find The testing points

[@chrishalenda7024]

The RUNTK4323 does not seem to have this component

[@Fernando-123]

Hello, I like yours videos, have problems whit my westinghouse tv 55' the image freeze every 2 second and come back for 2 second and freeze again, the sound still working good during this problem also when freeze have some vertical lines, I have opened and the T-Con make sound like buzzer or similar when freeze, What do you thing? Thanks a lot.

[@LinelisTube]

Fer ja I'm having the same problem, have you found out how to fix it, what was wrong? Thanks.

[@Fernando-123]

Linas Barauskas Yes have sucsses changing the Tcon problem solved.

[@OceaniPhonerepairSanFrancisco]

I did this test on my t con board and its good... so what would be the fix for my tv? LG 60UF7300 the menus are clear but when I try to connect anything to the hdmi or any inputs its snowy, I can hear the audio I just cannot see a display. I have already purchased and tried a used known good main board but I still have the same problem. any help appreciated that can help me test my tv further to find the problem thanks

[@learnfromatharv7121]

Check if your LEDS are working. 50% time its the fauly LED. You have to test the panel with a flashlight. If you can see the dim images moving them its definiately your leds which have gone bad.

[@imzjustplayin]

If the LEDs were bad, then he wouldn't be able to see the menus either.

[@majda56]

If you know how to use a multimeter, you can check the supply input coming into the t-con board..then check the supply output to the lcd panel..just be careful ayt..own risk.

[@majda56]

Also check the LVDS cable whether the problem from the connection..hope this help.

[@iNetBaho]

Hello, Where can i find this T-con Runtk 5538TP zz 48B28T. Please my is damage and i need a new. Thanks

[@patrickmacharia2941]

my lg 32lf550d is powering on,has sound,remote control doing fine and there is backlight on the screen..but no image though there is attempt of image appearing..please help

[@gordontrainer]

O I suggest buy one of two boards for under 100 easy to find wrong or bad board

[@MShrader211]

But that's only where it is located on THAT SHARP TCon board.... how does one go about identifying this component on other brands of TCON board? I've got a Samsung 46" TV's TCON sitting in front of me that causes the entire TV to constantly reboot (Power on, Samsung "warble" sound, power off, power on and repeat) when the ribbon is connected between it and the main board. Even when disconnected from the display panel it still causes the TV to reboot constantly... but unplug this TCON from the main board and the TV comes on and stays on (though there is no picture of course). I'm on the fence, spend a little money to try a replacement TCON board that might or might not solve this TV's problem (and might be ruined itself) or just go ahead and pack it all off to the recycling center.... ?

[@Custom3dPrinting4U]

Why not show how to troubleshoot the TV panel lmao it's like saying hey let's solve problem B not not problem A which causes problem B?

[@ldonaldson780]

excellent video thanks I wish I could have seen this video before I replaced my T-CON board in my Sony KDL- 52v LCD TV it would have saved me a lot of time and money I will reference to this video the next time I work on this particular brand of Sony TV thanks P.S. do you sell a replacement EEPROM for a (Auria EQ 2288f LCD TV) mainboard location=U16

[@johnm-vo9cm]

Hi i have 8 blinking red light But when unplugging tv before flashing I got on dc voltage 0,251 Drain 0,003 SOURCE 0,002 Gate with 8 blinking red lights Drain = 0,000 S = - 0,003 G = 0,000 diode test 0,227 continuity = 0L thanks for help

[@rickcol1286]

SONY BRAVIA, KDL-55EX640. TV was working fine till one day i turned on, had normal video and audio for a few minutes but suddenly got distorted picture, then fine vertical color or black/white lines, then pitch black screen while the power on light (green) remained on. I tried shutting it off, right after, but wouldn't respond to remote. Finally, i tried unplugging it, waited at least a minute, trying to reset it before plugging it back on, but the green light remained on, no picture and still unresponsive to remote. I kept trying unplugging it and plugging it back on, using the remote, and hand controls on side of TV to shut the green light off and have the stand by light come on but wouldn't work. Now, literally, the TV has its own mind, the stand by or power on light come on whenever they feel like it. Inconsistent response to remote when powering on/off. When it decides to turn-on it has normal video and audio but short after it makes a loud alarm like sound then the screen shows distorted picture with fine vertical color or black/white lines then picture goes black . Then it turns on/off on its own, with long intervals, then it cycles again.

[@rockjoymanong6466]

How to repair t con board MODEL BX3413TPZ

[@Reseiver]

This will be my weekend project. Thank you for the detailed video.

[@AGRANDEZ]

can tellus the name or part namber please

[@BT-bt8kg]

Love your videos! Having trouble with a Vizio and want to see what you think. It's a Vizio M420SL Led Smart tv. Symptoms: I can power on and see the Vizio logo with backlights just fine. After the "boot logo" disappears the screen then starts flickering boxed blue, red, and green all over the panel. I tested the Tcon board as you did in this video and my results are odd. With power applied and the screen on, I'm getting next to nothing in voltage on any of my pins. I'm thinking bad panel, until I pulled the board and tested it with no power just like you did in be video and it reads completely operational. I've tested my voltages in stby and on to each board and everything I reading the normal range. I did identify two bad diodes in parallel with each other (SB560s) on my secondary power supply (SMPS) as they both read open in both bias'. Going to swap them out with two new ones but wanted to see if you could identify anything you've seen caused by this? Thanks in advance!

[@EclectikTronik]

Why do you call it 'the component' when it has a name - it's a MOSFET! No great secret, guys! ;-)

[@khalid2667]

Could you read/tell the label on that "component"? I need to pull its datasheet.

[@rohaizatahmad5883]

hi bro...i would like to know the name of that part coz i try to get replacement then seller ask me what is the part name

[@MCoblentz62]

by "Panel", he means the whole display

[@yshinde2304]

Software videos

[@juniord7578]

Thanks, this video helped point me in the right direction.

[@jorgegarza772]

Exelente amigo acabo de arreglar una con este tutorial gracias

[@carmelom269]

You twice mention "Diode" test but turned the dial on your multimeter to a different setting without stating or explaining the specific dial setting.

[@hailyphuc1765]

Thanks you!

[@johnloydcruzz5733]

thank you great tutorial.

[@raeesjamil1135]

thank you

[@vanmks967]

THANKS

[@Ommprakashsahoo770]

Really help ful

[@arpanchakraborty1361]

most helpfull for me

[@arbenismaili9476]

Ehag

[@patrickmacharia2941]

my lg 32lf550d is powering on,has sound,remote control doing fine and there is backlight on the screen..but no image though there is attempt of image appearing..please help