SAMSUNG UN40MU6290 Troubleshooting Dead Symptom

[@CutandShoot5x5]

Very helpful Thank You!!!!

[@a-1tvsalesservicellc186]

Glad it helped!

[@CutandShoot5x5]

@@a-1tvsalesservicellc186 thanks again brother!

[@George-jn3fv]

Excellent video, however, I broke the flip up part that the ribbon cable attaches to on the bottom right side of the set. Are you able to tell me what that part is called and where to order a replacement? Thank you.

[@a-1tvsalesservicellc186]

That is apart of the LCD Module itself. It wouldn't be cost effective to replace it. You could attempt to have someone remove and reattach a new one that has VERY good soldering skills... but that is a task!

[@G1LB3R]

Do you know where can i get the connectors for the speakers? I want to make a wire harness to put between the mainboard and the speakers to have a 3.5mm jack for audio output. I just found out the bluetooth can be enabled thought the service menu. My TV is a UN55MU6290.

[@rubenjimenez8729]

Great video! I followed all the steps and unfortunately on neither step did the tv light up. I guess maybe the main board and the other board are toast? Thanks for the help either way.

[@bandolero632]

Could you tell me where to buy the main bn94-05762n card for my 40 "samsung

[@a-1tvsalesservicellc186]

www.encompass.com www.shopjimmy.com are some options

[@travelwjp]

Great video! I have the same issue and tried all your steps, but the backlight never came on. Could it be the board that I'm plugging the power cord into? This is the model I have: Samsung model UN55MU6290FXZA I turned the TV ON last week, and within a few seconds, it made a loud noise and completely shut off. Thank you in advanced!

[@a-1tvsalesservicellc186]

If you isolate the power board and the backlight it's plugged into, and leave everything disconnected from the power supply, do you get illumination from the led strips? If not, it's either a bad power supply or led backlight or both.

[@travelwjp]

@@a-1tvsalesservicellc186 I removed the harness that is connected from the power board to the mother. I plugged the tv in, and unfortunately no illumination from the led strips. I followed the same steps as in the video. I also checked multiple outlets just in case, but nothing is working. Could it be the power cord? I'm willing to take the risk and buy a new power board first before buying a new TV. Since you're an expert, do you recommend any brands/Tv Models? Thank you very much for the prompt response🙌

[@a-1tvsalesservicellc186]

@@travelwjp I would take a multimeter and do continuity test on power cord but mostly likely bad backlight array strips.

[@Dre1_]

0:56 I removed the power supply harness and then reconnected the power cord but I’m not getting backlight, what could the issue be here?

[@a-1tvsalesservicellc186]

The LED array strips need to be replaced.

[@distance35]

So I have a 2020 model 82 inch led tv. It’s stuck in a boot cycle and never sees a picture just black screen and continually reboots but if I pull off the single panel cable off main board I can hear it boot up and I can even connect via iPhone with sound still black screen. Are you saying it’s not the main board if it boots ( without display - black screen ) ? All back lights I can see now stay on. Could it be the long rectangular boards at the bottom on tv ?

[@victorygarden7226]

At the end of the video you stated the motherboard from the factory comes reset? I'm purchasing a refurbishes motherboard from Ebay and want to know if I would have to some sort of reset? Thank you

[@zlw1]

You can reset your mother board if you like. By going into the self diagnosis menu of the television. Push home button on remote -> scroll to the gear option -> push the center button on remote -> opens service menu -> go down to support --> self diagnosis --> reset smart hub --> 0000 (password) --> ok --> then go back to self diagnosis --> reset tv --> 0000 (password) ---> yes, and it'll go back to out of box mode to start from scratch.

[@victorygarden7226]

Thank you

[@victorygarden7226]

Is it necessary to reset the tv after replacing the motherboard?

[@gamingmunky4446]

I have the same exact model. I went through all the steps of unplugging the power harness from the power supply and the LED lights come on. I removed the wide ribbon cables from the panel and no back lights come on. Based on the video this means it was a bad motherboard so I ordered a new motherboard and replaced it but it still does nothing. I'm still getting the same symptoms that I had before replacing the board. What more can I do?

[@a-1tvsalesservicellc186]

So if you have backlight by disconnecting the main from the power. You rule out led backlight and power supply board failure. Next, if you reconnect the harness from the main to the power, and disconnect the ribbons to the panel and get no backlight, then you know it's a bad main board. Make sure you have ordered the exact same part number of the main board, BN94-#####(Letter) If you ordered the same part number, and it's not booting up, then check your connections. If that's not the issue, then you likely got a 2nd bad main board.

[@gamingmunky4446]

@a-1tvsalesservicellc186 both the new board and the old board have the same part number printed on the board directly. Labels on both the new board and the old board also have the same TV model number listed. I think that the second board that they sent me was already bad. I'll see if they continue another one. Thank you!

[@chrisweihrauch]

I have the same TV and I am getting ready to replace the LED strips. How hard is the panel to take out on these? I'm a little nervous of damaging the screen.

[@a-1tvsalesservicellc186]

Pretty easy if you use suction cups. Just make sure when you are done removing the panel, to release the pressure from the suction cups. It will lead to panel deformity if you do not.

[@leugimmiguel921]

Thankyou for the video very helpful.where did you buy mother board?

[@a-1tvsalesservicellc186]

try www.encompass.com

[@angelcarreon8121]

Thank you for the video. It is helping me narrow down the problem. My problem started last night all on it's own. The only thing I did different was have a Chromecast v1 plugged into HDMI and the USB cord that powers it into the USB port for a few hours. All of a sudden TV has no picture and starts rebooting. I have opened it up and tried the following. 1. Only power board connected. I get solid backlights and unit stays powered on. 2. Only power board and main board connected. I get solid backlights and unit stays on. 3. Power board, main board and one lvds cable connected. Backlights on and unit stays on. Same if I reverse to other lvds cable. 4. Once I connect both lvds cables and plug in power, tv turns itself on I get no picture or menu options. And it goes on to power cycle over and over. Is there any possibility that the issue lies in the main board. Could something have blown there? Are there any fuses on there? Any and all help appreciated. (I replaced Power Supply that had gone bad a few weeks ago and all was fine until now)

[@a-1tvsalesservicellc186]

That's a toughie. It's either a bad motherboard or the LCD Panel. But, I'd lean toward the main. BN94-12840X I think is the part number I used for mine... yours might be different. I'd think it's the main because it's possible that the chromecast may have surged it. It's odd that if you disconnect the main on one side, you get backlight, and vice versa. I would sub in a main if you had one to test. It's likely the issue. And as far as fuses, they are microscopic, but usually it test open if you see it bad. (ie k/M ohms instead of 0)

[@angelcarreon8121]

@@a-1tvsalesservicellc186 Thank you for the reply. I am going to try a different main and have my fingers crossed that that is the issue. I've been testing some spots with multimeter (but I'm really just seeing what happens bc I don't know what voltage the test spots should have) I do see a few spots come in at 0 v. I'm learning along the way. Thanks again.

[@MrZabegan]

@@angelcarreon8121 I have the same problem as you currently as you described it. Any luck at the end? I purchased new panel cables, and I am thinking to buy a new motherboard. What was your outcome at the end?

[@angelcarreon8121]

@@MrZabegan Hi, unfortunately I had no luck with the new motherboard. I didn't buy the new wires but had tested mine at all the points and they were good. I think the problem was with the LCD panel. I researched how to fix that but it was quite difficult so i gave up there. Purchased a new TV.

[@robertrumfelt7843]

Thank you!

[@sroutsidehitters]

Great details in the video! Helped me problem solve. Have a different result with my TV....I have power, backlight, and LED. TV will run for about 15 seconds on over the air TV then screen will freeze with current picture? Any further ideas would be awesome. Thanks in advance

[@a-1tvsalesservicellc186]

If the picture freezes the signal might not be strong enough try another station.

[@GeorgeGeorge-xj2bc]

Probably the nand flash memory has failed.For the 5000 samsung series is available the replacement chip but as far for 6000 there is nothing.

[@Heatlifer305]

Very good video!! Is it possible that I can email you a picture of the screen of what’s showing on my 55 inch samsung tv? (It shows white noise lines on top of the image you’re watching) Just to get your point of view or opinion? Thanks!

[@a-1tvsalesservicellc186]

sure, message us the information and we can take a look!

[@lauraarmour6022]

Sorry, I meant to say, that I can’t find places where I can buy that replacement motherboard for my tv model UN49MU6290FXZA.

[@a-1tvsalesservicellc186]

try www.encompass.com

[@philmulholland8413]

Hi I have a 55inch the screen is only showing a negative picture. Will this be the motherboard as well please?

[@robertlongoria765]

Dear A-1, The color on my Samsung UN55MU6290, 55 inch, is almost a "negative" sort of color, really no skintones at all. I have tried all of the settings; but no luck The color is not vivid, where it is in color it is wassed out.. Looks like I am missing a primary color but don't know enough to know which one. Does it sound like a mother board problem and If you live in Houston Tx I would like to give you the business. Thanks - Bob

[@a-1tvsalesservicellc186]

Appreciate the opportunity, but we are in DC Metro Area. It sounds like you might have a problem with the LCD Panel, but if you want to pm some of the pictures of what it looks like turned on, one of us can evaluate it remotely and give you an idea.

[@Giorgiio69]

u bought the wrong motherboard. Need to change eeprom 25q40 or in service menu.

[@ozzypr]

Hi there’s no need to use a anti static bracelet???????

[@a-1tvsalesservicellc186]

To be safe a bracelet attached to a static mat is the preferred method.

[@mattsternc]

Excellent video! Thanks for posting this. I've got an interesting issue with this exact TV that's been occurring for the last couple of months. It's been heavily used since purchase in the Spring of 2018. Everything will be working fine and then all of the sudden the picture and sound will drop out for a couple of seconds. Sometimes it will happen just once and other times, several times in a row over the course of a minute or two. I've got Roku and UHD Bluray hanging off the HDMI inputs and noticed yesterday that the Bluray player did it quite a bit. Curious at that point, I went into the Service Menu and ran some of the test there. The CPU failed it's test, but everything else passed. In your experience, is that normal for it to fail or do I have a mainboard that will completely fail soon? Only thing I can think of is that it took a surge when a storm came through a couple of months back, even though I was running a Panamax surge protector since I've had it. I've switched to a Surge-X now, but it's still happening.

[@a-1tvsalesservicellc186]

That's a very unique issue. You can try a motherboard but it may have a firmware type handshake problem possibly? Other than trying to update the firmware in both units, I would try that motherboard. Just make sure you get the exact part number or the direct substitute for it based on the BN number found on the board. Don't go by the generic BN97#, rather the BN94 or BN96 found on the barcoded sticker.

[@rpope317]

I have a 65 inch Samsung, used it heavily for 5 years, and a water heater broke above it and might have water damaged it, or could be ware and tear, I turn it on the picture looks about normal, but after a min to heat up the picture gets a bunch of horizontal colored lines down the middle of the screen. Best guess at what would cause this?

[@a-1tvsalesservicellc186]

usually horizontal lines are the lcd panel itself, and is not cost effective to repair.

[@SpeedyGonzalez-zb2op]

Cambiar la tarjeta main es muy fácil !! Reparar la tarjeta main es lo que hay que hacer !! Saludos.

[@a-1tvsalesservicellc186]

More power to you if you can!

[@quickmarch]

Thanks, nice video. My board seems to test OK with my multimeter. But, when I unplug the mainboard, the backlight flashes on, for a second, then off for maybe 2 seconds, then on again, only on one half of the TV it seems. I'm not sure if this points to a mainboard, or power board issue... Any advice?

[@a-1tvsalesservicellc186]

Sounds like the lcd panel has to be the issue.

[@drummerhammar]

Thank you very much for this video. I tested the power supply like you showed, backlights come on. So, if I disconnect the two panel flatcables from the green board when and I power it up the backlights must stay off. Is that correct?? If the backlights come on then the panel is shorted??

[@a-1tvsalesservicellc186]

if the two flat cables are removed from the panel and the television stays on, it's the Screen LCD Panel TFT that is bad.

[@taifquraish347]

hi , just a question is easy to change the screen as my screen was accidentally cracked by my kid

[@a-1tvsalesservicellc186]

It's easy, just not cost effective.

[@bradclay451]

I had similar symptoms on my TV - same model. I bought a used motherboard and swapped it out. After swapping out with the new board, it will turn on but the screen is messed up. Lots of verticle lines in some areas of the TV. Some of the TV is visible, but some areas again are just covered with verticle lines blocking out the image. I was told that Verticle lines can be caused by a faulty T-CON Board, but I do not see one on this TV. Can you give any advice?

[@a-1tvsalesservicellc186]

Sounds like the new motherboard is faulty. The T-CON is built onto this motherboard.

[@Giorgiio69]

wrong motherboard with wrong eeprom software.

[@jimrutherford4873]

Do you test a Samsung m# UN50NU6900B the same way?

[@a-1tvsalesservicellc186]

Most Samsung Tvs you can test this way.

[@jesusriesgo9919]

Hi Sr in case that with no panel connected still lightning the problem is the tv panel?

[@a-1tvsalesservicellc186]

If you have just the power supply and panel in sequence and it has backlight, then you know the power supply and backlights in the panel are ok. If you reconnect the main board to the power supply, and get no video, disconnect the cable between the main board and t-con and attempt to turn on. If it turns on, likely it is the t-con board or the lcd panel.

[@th3drizzl378]

i just got a new board for a mu6300 (no hdmi working it was replaced once before for same exact reason) they want me to set the option bytes. i dont normally repair samsungs can you explain what or how to get the correct info to do this? thank you for any help.

[@th3drizzl378]

i think i found the info and what i need to do it seems simple enough thanks

[@rrrnay6055]

Great video! I don’t have the same exact model, but looks very close. If I turn on the TV, the backlights are blinking, please note that I cannot use the remote to turn it off (which I read somewhere else that this could be a symptom of bad motherboard) I have verified that the power supply board is ok. Then if I disconnect the LCD cables, the lights are still blinking and cannot turn off the TV using the remote. Do you think it is still possible that the motherboard is the issue? It seems to me that your test means: if the LCD is not connected, the motherboard will indicate that, and the symptom be the blinking. If the motherboard cannot detect that the LCDs are not connected, then it is the motherboard. I guess, my question is that could it still be the motherboard and have the TV blinking when the LCD cables are detached?

[@a-1tvsalesservicellc186]

probably a bad lcd panel.

[@christianolmedo-su8nu]

I have the same problem where can I get the mother board or can i fix it?

[@a-1tvsalesservicellc186]

try www.encompass.com

[@mm3_yt223]

from were did you get the borad

[@a-1tvsalesservicellc186]

try encompass.com

[@jasonperkins9540]

Did you ever find out what component failed on the board?

[@Giorgiio69]

eeprom is empty 25q40

[@rogelioponce4414]

Do you know where could I buy a screen panel for a Samsung tv un40mu6290f

[@a-1tvsalesservicellc186]

Other than directly from Samsung, it will be tough. They don't sell direct to customers however, and you'd end up spending more money than what it's worth from a repair shop.

[@Alex7ati]

So if you do the second test where disconnect the wires from the main board and screen and you get the lights, is there any hope of fixing the TV?

[@a-1tvsalesservicellc186]

If you disconnect the cable from the main board to the power supply and plug in the power, and get backlight, then you know the power supply and backlights are working. If you put the main back in to sequence with everything hooked to it, and you don't get power, then it's the main board.

[@Alex7ati]

@@a-1tvsalesservicellc186 I did get the lights cutting off and on with the board connected, only removing one of the ribbon strips going to the screen made the back lights stay on, but the weird thing is removing either strip give a constant back light and standby lights, but with both connected the problem comes back. Not sure what to make of it. I was about to assume the screen was bad , but it random came back for a few minutes then problem came back

[@a-1tvsalesservicellc186]

@@Alex7ati If you are disconnecting one of the 2 lvds cables from the main board to the panel's cards and you get a steady backlight, then, I would believe the LCD Panel is at fault. One of the cards at the bottom of the panel they hook into sounds like it's shorted.

[@mozberg2191]

@@a-1tvsalesservicellc186 I am at a similar crossroad here, what are the chances that both panels are shorted? if I disconnect either cable to the panels I get steady backlight. but not a half picture in any combination. I did have a spare main board of a 50 inch mu6290 and when I used that board I got random horizontal and vertical flannel colored lines.

[@a-1tvsalesservicellc186]

@@mozberg2191 There is only one panel (the LCD Crystal). The UN50MU6290FXZA is not compatible with the UN40MU6290FXZA if the panel version number is different. IE FA01 is not compatible with CN02, etc. You can tell which one you have if you look at the sticker on the back of the television. It'll say Version No LL## where the model + serial are. I would recommend to replace the BN94-#####L sticker on the main board with the same one you have in the 40" presently IF you have a main board problem. If the panel is at fault, the main board will not repair it.

[@robertoaranda3939]

MY 3D GLASSES DON'T PAIR MY TV SAMSUNG. DO I NEED A WHOLE NEW MAINBOARD OR JUST REPAIR THE BLUETOOTH TRANSMITTER IN IT? THANKS.

[@a-1tvsalesservicellc186]

Sometimes it can be the main, you'd have to check in your service menu to see if it's got a valid address.

[@robertoaranda3939]

@@a-1tvsalesservicellc186 Thank you.

[@SimoneDiego]

grazie mi hai salvato da comprare una scheda di alimentazione invece è la scheda madre bruciata

[@stephenmohammed3970]

I have a .. samsung 55 led.. the tv cuts on and off with a flashing standby light.i hear a start up sound and see a blue screen when this happens.. when I disconnect the main board from the power board the backlight alluminates.. any suggestion what may be the problem?

[@a-1tvsalesservicellc186]

If you disconnect the lvds cable between the main board and the t-con or if the television doesn't have a t-con, and you disconnect the lvds between the main and the panel, what does it do?

[@tankibosses4719]

Where did you get you board from?

[@a-1tvsalesservicellc186]

Samsung

[@Bcordon]

I've had my TV in storage, it was shipped to me Dead on arrival they refunded me without return. However I wanted to try to repair it myself. I followed your steps and have determined it to be the main board as well though I see another commenter found that it wasn't the main board. My symptoms are as soon as I plug it in it turns on which with other devices has always indicated a power supply problem. They get stuck in a boot cycle loop and then I find out it's due to some tracers being destroyed by a capacitor or something like that. mind you I have really no idea what I'm doing I've just repaired a few original Xbox motherboards from modding them in the past. What I'm experiencing is I plug it in I get the red standby light then stand by light goes off screen flickers up boots into software allows me to click around for a while until eventually it seems to then start the cycle and the longer that I leave it on the more the cycle seems to accelerate in frequency. This makes me think it's the main logic board overheating but I checked under the heat sink and it looks good still has thermal grease and looks brand new.

[@a-1tvsalesservicellc186]

If you are getting clear video, and the set begins to reboot, and never has video distortion, likely it's the main pcb. If it's still rebooting, constantly, try unplugging the power button on the television when it's in that process and the wifi card and i/r board. If it keeps doing it, then it's either the main board or the LCD Panel itself.

[@danielgoray8307]

Where can a i buy a motherboard for a Samsung un55mu6100?

[@a-1tvsalesservicellc186]

www.encompass.com

[@markeldridge8924]

Sometimes when i turn on my TV in the morning ( when TV is cold ) after a couple of minutes I’m getting vertical lines ( ghosting ) when I disconnect the ribbons and turn the TV back on the backlight comes on for maybe a second or two ( cycling ) do you think I need a new main board or is the LCD gone, can you help please.

[@a-1tvsalesservicellc186]

It sounds like the lcd panel is failing do some investigation to make sure before you condemn the part.

[@Ricardo-lk4oh]

I have the same tv but it’s stuck in a reboot loop. Any suggestions on how to fix it?

[@a-1tvsalesservicellc186]

if the video stays lit the entire time, I'd recommend the motherboard.. order the exact same BN number as found on the board's white rectangular sticker... ie BN9#-#####L where #=a number an L=Letter

[@Ricardo-lk4oh]

@@a-1tvsalesservicellc186 Thank you for replying back. It only stays on for a couple of seconds before it turns back off and on repeatedly.

[@lauraarmour6022]

Hello, I check your video is great, the only problem is that I can’t find places to sell that part for my model UN49mu6290fxza, please help me thank you

[@Gollumfiech]

Hallo A-1, can you help me: I have a Samsung UE55MU6179, that makes the same on/off and no screen. When I pull Ribbon 1 from Mainboard to screen, it keeps on with backlight but no picture. Wehen I put ribbon 1 back in and pull ribbon 2 from Mainboard its the same, tv keeps on with backlight but no screen... I think it is the Mainboard, what Do you think? Thanks a lot

[@hermanedirksz6995]

i have the same problem !!!!!

[@Gollumfiech]

@@hermanedirksz6995 It's the Mainboard!...I replaced it, now the TV works fine again

[@mattman10666]

Thanks A1 My Problem; When plugged in the screen goes on and off and red lights flashes with it too, no logos or menus just flashes. I unplugged the power harness and the backlight comes on and stays on. I've checked the voltages; Ana dim 3.27v Od_on/off 0 Pwm 3.60v Power on 4.51v 13v outputs all register 12.84v It was struck by lightning. I think it's the main board and not the power board. When I unplugged the flat cables and reconnected the power harness I got sound and back light is on with nothing on the screen

[@a-1tvsalesservicellc186]

Likely it's the LCD Panel. If you are able to get audio without it rebooting when you attempt the last step, it's likely the main is ok. It's likely one of those two bus cards hooked into the panel at the bottom causing it to restart constantly. Sometimes in certain models, you can get half of the panel to work if you disconnect one lvds ribbon from the panel and leave the other in place... if you can get 1/2 a picture this way, that verifies the panel is bad on one side of the card at the bottom of the panel.

[@danwalker6691]

What if you never get the backlight at any stage?

[@a-1tvsalesservicellc186]

Probably bad LED strips or a bad Power Supply. You'd need to check the voltage from the pins on the power supply that connect to the strips going into the panel.

[@MinhNguyen-qi2np]

Would you please let me when I unplug two panel cable and turn on power on then the back light is blink? Which one between The main board and panel no good in this case. Thank you

[@a-1tvsalesservicellc186]

If you disconnect the cable between the green (main board) and the power board (orange board) and put power in, you should get backlight. If you do, the power board and panel are ok.

[@Sezaa]

looks like have backlight led problem

[@edgarandresherreraarzola9715]

Hello!! Do you know where can I get the mother board un55mu6350fxzx bn94-12727b fa03??

[@a-1tvsalesservicellc186]

You can try www.encompass.com

[@UnsupportedElephant]

HI, great video. Could you please advise, I have led light on but when turning on, screen goes with `SMART TV` logo and then remains black, no audio, nothing apart of black screen and all the led lights on - would this be motherboard? Appreciate your reply )

[@a-1tvsalesservicellc186]

Do you get led backlight to show up if you disconnect the power supply from everything but the panel for more than a few seconds? If so, then it sounds like a good possibility that it's either the main or the panel. If you don't get backlight at all or past a few seconds, or it's flashing, it's likely bad led backlight strips.

[@UnsupportedElephant]

@@a-1tvsalesservicellc186 Thank you for reply 👍 Backlight is on without motherboard and I will replace it although the panel you referring to ‘is this t-con board ? Appreciate your time 👍

[@drummerhammar]

@@UnsupportedElephant Did it work?

[@UnsupportedElephant]

@@drummerhammar Yes )))

[@jacquesboden-stein6724]

I have the same problem , how to buy a new main board

[@a-1tvsalesservicellc186]

check www.encompass.com or www.shopjimmy.com

[@abigailastacio3629]

My tv UN43MU6103 i have exactly the same issue. It seems like i have the defective main board. I've seen in some sites they say MU6100 AND MU6300 are compatible but I'm not sure because the part number is different for example: my tv has written BN94-12650A while the MU6300 has BN94-12437F. The part looks exactly the same. Does anybody can help me finding the right replacement. Note: nowhere in the website i could find the BN94-12650A part. Please help me! 🙏

[@a-1tvsalesservicellc186]

encompass.com/item/11504851/Samsung/BN94-12650A/

[@alexshady31]

My samsung ue40mu6102 it turn on, i can change the chanels but i cannot turn up the volume. Just from 0 to 3. I cant connect to the internet, even the keyboard dont show up to put the password. I can not reset it from the menu. It's not let me to do anything. Any idea?

[@jcalzada74]

My TV screen turn on and off .? I disconnect the main board and it got power from the power supply led stay on is the same problem.??

[@a-1tvsalesservicellc186]

If you disconnect the harness from the main board to the power supply, and leave only the power supply and led panel in play, do you get backlight to stay on, and not flicker? if so, reconnect the main board to power supply, disconnect the wifi/bt board from main, and disconnect t-con lvds cable between main and t-con. If tv does not have t-con, disconnect LVDS cables from main board to panel. Does backlight still stay on? If yes, then it's a bad lcd panel itself and is not cost effective to repair. If it stays off, the main board is at fault.

[@jcalzada74]

@@a-1tvsalesservicellc186 i just did the test exactly as you did disconnect the wifi. The 2 panel boards from panel it did the same on your video, no lights came on just the red dot on the power stay on looks like I got a bad main board 👍👍👍👍

[@a-1tvsalesservicellc186]

@@jcalzada74 sounds good. Make sure you get the same part number. If it is a main board for a television in the United States, it'll start with BN94-

[@jcalzada74]

@@a-1tvsalesservicellc186 thank you I look it up i found all 3 for 70dlls

[@jcalzada74]

@@a-1tvsalesservicellc186 well I got the part and didn't fix the problem, I will discard this tv for good

[@mrljk3]

Great video! I “think” my panel is toast but hoping you can help me confirm. I made a video too I can send you or I also put it on my page to help others. Essentially, I replaced the mother board, got it off eBay for $40. Great deal. Upon replacing, the TV still blinks on and off- I hear the new board trying to say “hello...” but then the power turns off and then back on. That’s what is puzzling to me. All this to say, the backlights stay on when I perform all the test in this video... so maybe power panel?? Mind watching my video? Really appreciate it!

[@mrljk3]

Here’s a link to my video: kzbin.info/www/bejne/pJ_HpoGpm692n8k

[@a-1tvsalesservicellc186]

Lance K Was the previous board having an identical problem? If so, then more than likely, two of the same parts are not going to have an identical problem. *Im not positive which QLED model you’re working on, but, if you disconnect one of the lvds ribbon cables from the main, and apply power, does the unit stay on and does it show any picture on one side of the picture, even for a moment? If not, disconnect power and disconnect the one ribbon cable from the main again. Reconnect the other lvds to the main, and repeat those steps. To me, right now, it looks like the panel is shorted electronically. You can post a second video if you like. Thanks for watching our video!

[@KH-xb6pd]

Did you find the problem? I have exactly the same issue and I want to confirm that it’s the mother board or not.. thank you

[@mrljk3]

@@KH-xb6pd It wasn't the motherboard for me. I replaced it and still have the same issue. Now I'm trying to find the Power Panel -- but very hard to find online.

[@KH-xb6pd]

Lance K Thank you for your answer. Good luck for the next step. I’m trying to find a solution too, I’ll tell you if I can fix it...

[@chandanapredeep7075]

I need 55mu6100,samsung,blank panel,no picture ,black light ok,tv on,plz help

[@a-1tvsalesservicellc186]

If the backlight is ok, then the LED strips and power supply are good. It's either a main board to LCD Panel issue. You can try the main board technique from this video. If the part is what's needed, you can order from www.encompass.com. Go off the BN94# found on the sticker on the main board, if that is what you need.

[@chandanapredeep7075]

@@a-1tvsalesservicellc186 thanks

[@ThatgirlChyn]

Hi I'm having the same problem with my 75inch my dad said It looks like the same one that your working on in this video. Could I get your number so you could repair mine as well.

[@aolvera43986]

Were can I get the main board

[@a-1tvsalesservicellc186]

You can order from encompass.com or check eBay

[@Jawidworld]

My Samsung smart TV main board softwear problem with no volume

[@a-1tvsalesservicellc186]

If you cannot update it, you'll need a new main board. (You can also try downloading firmware onto a USB thumb-drive 4gb or less if you cannot get it to respond) Sometimes, it can be an Audio IC failure on the main.

[@Jawidworld]

@@a-1tvsalesservicellc186 where can I download it from

[@detectandoelnorte9229]

PODRIA USAR OTRA TARJETA IDENTICA , PERO DE UN MODELO DE TV MAS GRANDE , MI TV IS DE 55 PULGADAS , Y TENGO UNA TARJETA DE OTRA TV DE 60 PULGADAS IDENTICA , FUNCIONARIA ? ( COULD I USE ANOTHER IDENTIFIC CARD, BUT A LARGER TV MODEL, MY 55 INCH IS TV, AND DO I HAVE AN IDENTIFY OTHER 60 INCH TV CARD?

[@a-1tvsalesservicellc186]

You can, but you need a service remote to adjust the options of the main board (ie UN55MU6290). It has to be from the same version number (if you look at the sticker on the back of the television) So if the UN55MU6290 is a version FA01, the tv you are repairing also needs to be a FA01, otherwise it will not be compatible. You also cannot substitute other models, ie a UN40KU6290 is not compatible with a UN40MU6290. The "MU6290" and Version # are the most important.

[@abigailastacio3629]

@@a-1tvsalesservicellc186 can you please tell if MU6100 AND MU6300 ARE compatible ?

[@frankalfarobendezu6665]

El detalle está en REPARAR la mainboard....no cambiar la placa

[@zlw1]

How are you going to repair the main board at the component level?

[@holgerleon9976]

Hello how i can find modern BORN for a Samsung Modern seria is un55mu6300fxza ..BN94-12642F PLEASE LET ME KNOW IF YOU CAN HELP ME THANKS

[@a-1tvsalesservicellc186]

BN94-12642F, if you need a main board, use that number and search on www.shopjimmy.com, www.encompass.com, or www.ebay.com to see if you can find a suitable replacement

[@detectandoelnorte9229]

COMO PUEDO CAMBIAR LA POSICION DE MI TV YA QUE ARARECE INVERTIDA (HOW CAN I CHANGE THE POSITION OF MY TV SINCE IT RISES INVERTED

[@a-1tvsalesservicellc186]

Send me a picture of what it looks like.

[@pititdesalinenegnago6413]

I have the same tv have backlight and sound just no image

[@a-1tvsalesservicellc186]

try removing one side of the lvds cable at a time to see if you get half of a picture. If you do, its a bad LCD Panel. If you don't, it's possible the main is bad.

[@goose33]

Hey mine has everything BUT a picture plz help

[@a-1tvsalesservicellc186]

If it has illumination on the screen but no video, have you verified you have sound? If you have sound + illumination, more than likely the main board and power supply are ok. If you don't have sound, but have illumination, it's possible the main board is bad.

[@obetohenry9675]

Samsung BN94-12642D Main Board goes off and on

[@a-1tvsalesservicellc186]

UN55MU6290FXZA. If you unplug the power supply from the main, and power on, does the backlight stay on?

[@JustWastingMyTimeGaming]

dizzy

[@VIGNESHRUpendiran]

Hai ,i need samsung UM40MU6290FXZA Main board,i am from india,is it possible to shipping to india?how much cost of that would be?

[@freddysanchez7882]

Cambiando placa, asi cualquiera repara. no necesita ser tecnico.....

[@edgardoabalos9070]

SIR PAKIBIGAY NGA CONTACT NUMBER MO DAHIL MAYROON AKONG DALAWA NA SAMSUNG FLAT TV 40” at pareho na sira katulad yang nakita ko sa video mo dito ako nakatira sa caloocan malapit sa monumento asap

[@CM-zq1is]

Totally confusing

[@josephmelville1]

now sell the tv because it will happen again thrust meeeeeee

[@kitchiemeneses8782]

UA55KU6000GXXP(blingking red light no display

[@a-1tvsalesservicellc186]

I do not know that model. It's not US based.