Backlight but No Video troubleshooting. Samsung UN60FH6200 T-Con

[@karlwilson2108]

Thanks. Sir, you are probably if not the best at carefully and meticulously explaining this to pros and amateurs.May God bless you and keep you strong.

[@bigdog8882]

Same to you my brotha. Thanks!

[@jeromeclarke4141]

Its a pleasure to see a brother being involved in this field,Electronics Repairs i am 62+ years of age and am from South America ,the Caribbean , had studied with NTS of Los Angeles California in the early 1980,s whereby the school was defunct before i could have completed my studies,nevertheless i am still involved in repairs after a few years of absence in the field and the sudden change from Analog to Digital/TV,s,,respect brother and keep up the good works God Bless.

[@c4a05monkey]

Just wanted to say thanks for this. Had a 60 inch Samsung that had no display but had sound. Watched this and ordered a T-con board replacement for it and its working like new. thank you so much!

[@screen-protector]

Two things. If in PSU you wanna just swap the fuse, and not risk blowing it back again, you should connect it through the bulb. If short will be still there, the bulb will light up, if not short, a small blink will be seen and PSU will wake up, or, at least you can continue your diagnoses without worrying from now on. 2nd thing is that we should not just short capacitors IMHO. We should use something like a 3.3k ohm resistor to do it. Why is better? Google can answer if you're interested :). Yes, will be no spars, that's a good guess ;). And, thank you for the video, as always, good job!

[@sammygimnyigei]

In series? With a filament bulb or the common type bulb?

[@screen-protector]

@@sammygimnyigei filament, but keep the watts right

[@larrypierce2777]

Yes, I did learn something. Your main board voltages, bottom voltages and test points, shorts. T con board, get the board. Saves a lot of hastle, time conumption. Great job man. Good work.

[@bigdog8882]

No problem. Thanks for watching Larry.

[@frank3722]

I have a UN60Es8000 that has the same sound and backlight but no picture. I tried unplugging each of the 4 ribbon cables to the T Con board trying each by them selves, in pairs etc and I never got a picture. The T Con was receiving 12V and the fuse was good. I tested all of the output pins on the ribbon and one row all got 1.4V and the other 0.9V. On a whim, I replaced the T Con and ... It WORKED!!!. Save me from buying a +/- $4K QD-OLED. Thank you for posting your videos and giving me ways to check my TV. We still do 3D movie night and so this saved us from dropping that family event.

[@billsteele2851]

I am so thankful for this video and your honesty :-) At 19:00 into your video you discussed testing it before you put it back together. You explained how it grounded out the T-Con board. I did the EXACT same thing :-( I had it apart to re-glue some of the LED reflectors that had come off. I put most of it together and tested. That's when I only had backlights when it previously worked fine. Needless to say, I just ordered a T-con board. Hopefully this does it. Thanks for your help.

[@sparkyuiop]

Great video man! Don't worry about trying to produce a professional video so much or that you need a remote control camera. You have a great way of teaching and excellent logic and that is all many of us want to watch.

[@bigdog8882]

Sorry I didnt see ur comment 2 months ago; LOL. But I greatly appreciate the excellent advice Spark. Thank U sir!

[@clarkkke7]

One of the best TV repair videos I've seen. Thank you

[@rgs4x]

I would like to give you my sincere thanks for this video. I was able to take my 55 in samsung apart, trouble shoot and repair my 3 year old $700 TV for less than $70.

[@zeeshansaiyed5263]

Hit the ground running Hi i have the same model but just a year old ..... was having few vertical line on the very left side of the tv and tried to repair it myself... while removing the ribbon cables and putting them back on the tcon board the tv went off..... now i can only hear the sound that tv is on but no display... can u help Please and Thank you

[@laurawhite4367]

Any luck with this issue? Having this exact problem now.

[@JimmyBComputerGuy]

This guy has a great sense of humor. Thanks for the video!

[@johnrosario8598]

BigDog8882 Awesome Tech Skills, Just Started Learning About Tv Repair And I Think You Are An Asset To The Trade, Your A Great Instructor And I Can See Your Skills Come From Back In The Day, When Learning The Trade Didn't Come Easy, I Watch A Lot Of Your Video's Cause At The End Of Day, You Know You Didn't Waste Your Time, Thank You So Much For Your Helping Hand, Look Forward To Your Up And Coming Video's, Peace Out You've Been Blessed .

[@mickl8212]

Brilliant information here! Not just checking TV's but circuit boards in general!

[@ROBMCKISSOCK]

Because of this video, I happen to notice my T CONN board was on FIRE. I did find a fire extinguisher and put it... THANKS BIGDOG !!!!!

[@carlosgarciaoropeza5480]

Great video. For technicians like me who think we know a lot. It makes you come down from your cloud. I'll go see the Norcal video. Thank you very much for sharing.

[@ramonperera6218]

I found it very useful. I have a TV with no picture and no backlight. Now I will follow your instructions to find the problem that I think it is the T con board.

[@michaelkuhn8829]

Very good video and logical way of eliminating problems- Testing inputs and outputs! Hope your video helps alot of people man! Nicely done!

[@JerryBrogdonmrfixxitt]

I have an LG E480i-B2 that I'm ready to diagnose now after watching your video on the 40 inch model. I feel positive about the outcome because you're an awesome educator - I've learned a lot about LED TV from you and look forward to even more. I'll post my result on my 480. Keep up the great work and thanks for sharing your knowledge! God bless.

[@gdfggggg]

Thanks for your advice bigdog. I had a blank screen and did your checks on the t-con board and was faulty. Bought a new one for £40 and problem solved. Saved me about £300 for a new tv👍🏻.

[@bigdog8882]

Glad I could help out. Appreciate U watching.

[@mira5751]

The T-con board was always a mystery to me but after seeing your video I am more confident now

[@michaeldruitt9280]

Cheers for the video. Was getting good input but max 200ma output. Just ordered a new board. Thanks.

[@SuperDave]

Thanks for the help. Had half screen gray and black with audio on a LG 75". After closely looking at the T-Con board notice the bottom right ribbon connector was not latched properly. I simply pressed the ribbon latch back on, then plugged the TV in and turned on and bam it was back!

[@rodwillett8814]

You truly are the Big Dog! Great teaching video. I learn every time I watch one.

[@patrickedmonstone4712]

Just used your video as a "guide line" on my 65 inch 4k. voltage didn't match output but input matched just as you said. Thank you for the flow chart/love lol!

[@bigdog8882]

Thanks for watching Patrick!

[@cliff4093]

You saved my screen, thanks for your help!

[@bigdog8882]

Glad I could help!

[@drkneevil]

thank you for sharing this knowledge. currently trying to fix my television and this was very helpful.

[@jeromeclarke4141]

I am from Suriname /thumbs up for this video

[@ronaldoquintos1675]

I was a TV technician back in the days of CRT TV but LCD I have trouble figuring it out. So thanks for explaining things. By the way you did not have to show us actual meter reading it’s good enough you utter what the reading is we trust you. It is more helpful to show us where you are touching the probe

[@sonsofj390]

Informative yet entertaining to watch. Thank you

[@bigdog8882]

No problem. Thanks for watching J jr

[@muratkural735]

God bless you Sir i like this electronic repairs videos

[@ActivateMission2ThisTimeline]

To find a short. With a good PS inject a volt or two into the short. Use a IR camera and find the hot spot which will be a bad semiconductor or cap. Keep current low. You can spray the board with cold frost spray and the shorted hot area will melt fast. Pick up a cheap IR camera on eBay and hook it to your PC. If you can't find the short turn up current to 5 amps and if no short found go higher. Keep voltage way below the circuit voltage that is usually there.

[@davidpeiffer2096]

Thank you for the video. I would like to know where I can find out what the voltages should be on the various test points on my Samsung LCD TV?

[@bigdog8882]

Should be a legend on the board next to the pins

[@davidpeiffer2096]

I looked at the boards in my TV and there are no voltages shown anywhere that I can see. I only see test point identifications. I looked at the boards in your video and I can't see any legend for voltages either. Am I missing something?

[@kristianmendoza7000]

thank you sir that is very informative for us for a country like phillippines;who is poor in technology.god bless

[@pontiacsrule8761]

Very well done video on T Con troubleshooting. Thanks for making this.

[@insanityhomelesss6380]

You are the first so far to kinda show testing the t con board. Now I'm at the step where my tv is working but the big chip on there is getting extremely hot. You didn't explain that more I'd like to know... and one know because I have sound and light but no actual picture

[@Notalliswhatitseems]

Now that, was bloody helpful. id buy you a beer for that if i was in the same country.

[@bobjohnson2009]

great video! thanks for taking the time to do these videos

[@cat-lw6kq]

well done, easy to follow as you went along. Just wanted to say I also have a scope that I found on ebay for $75 then you can see the signals at the T-con board. But you showed an easy way of doing it with a DMM.

[@bigdog8882]

Thanks Bro, That would be a Good video too.

[@joselopez-tw9qt]

nice explained.....i learned a lot....i have 2 samsung tvs lined up for the garbage ....maybe ill try to test them to se if one get repaired,,,hope so....thanks...

[@Fonst1960]

A very special thanks for your time and excellent video, it is an invaluable contribution, thank you very much

[@michaelmarshall6427]

Very informative,thanks for the info,keep up the good work

[@twbrkfd1733]

Might just be a poorly seated cable! I have a Samsung LN04051D. Got backlight. Hooked up a DVD player w/DVD for sound test; cycle through source til heard DVD. Checked for burned caps, etc. Disconnected and re-connected the tcon cable and voila! Works now! Yippie I got TV. I suggest people start first with re-seating cables! Checked fuses first too. Thanks!

[@walker55able]

Great video Big dog I have ordereda Tcon board today. ☺

[@seansoles1679]

Glad I happened across your video(s) man- hands down the most informative and helpful. Appreciate you

[@bigdog8882]

No problem Sean.

[@FootworkB]

Just fixed my 13 year old Samsung lcd for $13........THANKS!!

[@motoboss5250069qew]

Thank you for posting these videos, I really appreciate it sir. 👍😉

[@semone2222]

Thanks for your time and help

[@jbsmalley30]

Your videos are of great content thank you for your time and effort.

[@walkfacefirst]

Great Video. T-Conn board fixed my Samsung 60" led tv.

[@jorgevillacis8127]

Brad where did you purchase the part ?

[@robholmes1872]

Big Dog, I've fixed loads of tv's, mostly PSU faults, capacitors, diodes, fuses E.T.C. I got a Samsung UE55KU6000K in the last few days, turns on, with sound and backlights, but no picture. I have never had this issue before.. Normally completely dead or no backlights. This will really help me to determine whether its the main board (no TCON board on this model) or the lcd panel, too tired tonight but I'll test the voltages on the output to the screen tomorrow, thank you so much!

[@melly_ngeresa]

Thank you for this video

[@nishanthaamaranath4058]

you are grate trainer, Thank you very much. good job.

[@RJSoftware2000]

Subscribed. You had me when you said what T-con meant...! Very informative fuse checking info. I'm just learning for fun of it. Thanks.

[@gareginasatryan6761]

It means timing controller

[@jeromeclarke4141]

Jerome from Suriname just keep it coming Brother keep up the good work ,,God Bless

[@jovellagadunan8020]

its really helping thanks for additional information, I got de same problem it so confusing it might t-con board or logic board, and I got an Idea. thank you so much for this video

[@DADEMANA]

solid

[@lakestatebullies7391]

Thanks for showing how to test everything before buying parts.

[@indikaprabash8084]

Great great...... Nice and smooth explain......highly appreciate SIR.... Thank you very much. Cheers 🥂 from Denmark 🇩🇰🇩🇰🇩🇰🇩🇰🇩🇰

[@bigdog8882]

No Problem. Thanks for watching!

[@trone32]

Thanks for this just fixed my TV using your testing procedure checking for voltages etc. Great video

[@jackwhite5978]

Hey bigdog I'm a fan of your videos. I have a TV that power's on the back light flashes then shuts off.

[@joelparedes5378]

nice lecture...i fully understand

[@AlMartinez-qx6ri]

Where are you located???you are excellent

[@adamjames5680]

Great video. Thank you for sharing your knowledge.

[@sonofgodjesuschrist2785]

VERY GOOD JOB THANKS 😃

[@hectorcalderon5665]

Thank you for helping me,,I will be tunning in every day,,, GDBLESS

[@critread]

Great info and very thorough. Thank you!

[@alfonsousman4927]

thanks for troubleshooting and good explaination.

[@andreschu5670]

Grateful for your work!

[@wyingren]

Hi, thanks for the video, I have checked that, there is not signs at the T-con broad input, I checked before the input, there is 1v signs from at the control panel output, if the issue could be happen in the T-con board?

[@raulegido]

Thanks for your video. One question. with my loewe individual 46 i´m able to see for a second a message that says no tv signal right before the screen turns black. Do you have any idea on what can be the cause of this problem? power supply appears to be working since i can hear the hard disk working properly and i´m able to send commands with the remote. thanks in advance

[@Electrolab28Ag]

Very nice video man. I learn a thing or two today. Thanks for the tips.

[@bigdog8882]

No problem. Appreciate U

[@bitoe123]

Hello! I was wondering if it's ok for the fuse on the TCON to be displaying 14V ? From a samsung plasma.

[@bigdog8882]

Plasma tv is entirely different. They use a logic board. So the 14v may be good or bad depending on the line the fuse it is protecting. Thanks for watching Jose.

[@ZaheerKhan-jt6ve]

Nice informative vedio learn from it thank you very much

[@thecrankster4162]

Very good video.. Much appreciated... keep up the great work......

[@Notalliswhatitseems]

Bigdog, some advice if you dont mind? I have a UE48HU7505T, it has the same issues as above, the fuse on the T-Com is fine, the test points on the input ribbon from the main board is showing 0.52v or 0 on a lot of them, i cant turn the unit off, would this be an indicator that its actually the mainboard and not the T-Con? i have 12v 18v and 5v coming from the power board into the Mainboard, no chips on the main are very hot so i dont suspect a short. As there are only 3 boards on the TV (not including the driver boards on the panel) would it be worth replacing the Mainboard?

[@bigdog8882]

If the tv has no functions. Yeah I would suspect Main Issue.

[@Notalliswhatitseems]

@@bigdog8882 Quick up date on this, traced the issue to the 41pin cable connector coming into the T-Con board, one of the flat ribbon traces that goes into the connector on the T-Con board, had lifted and was shorting itself on the pin directly next to it. this was giving me low 0.91v on the 1.2v VCC TP on both halves of the board, replacement cable and the screen sprang into life. But your video was immensely helpful Thank you very much bigdog.

[@renitaedmonds72]

Nice video but I wish you would have explained what setting to put on the multimeter....

[@judywire]

Great job bigdog!

[@stevenbuckner8864]

Thanks big dog. Helped a lot.

[@OrdinaryHandsome]

3:52 Love the tool man & great videos you make Dog :D

[@peibarry1335]

Excellent Video. Best on KZbin.

[@bigdog8882]

Thanks, appreciate that.

[@eman59461]

You might want to check the capacitors they go shorted i have a video on that. Nice informative video and thats a mistake i almost made one time.

[@bigdog8882]

I know I had one like that about a week ago. Appreciate that! Thanks for watching.

[@eman59461]

very welcome

[@karlaaschoff4640]

thanks for sharing your knowledge and time.. I'm struggling to repair my 46W300A here, the t-com is good , I followed your advice and checked the voltage in and out of it, and found the same values you did ( although it's not a Samsung, but the idea is the same ) ... but the tv is not giving image at all. the back light is okay.. the power supply is okay.. I'm thinking it could be the flat cable. I don't know..

[@bigdog8882]

Disconnect the Ribbon cables going to the panel (screen) one at a time, their should be two. If you get half a display or picture on one side of the screen, then U have a bad LCD panel. Thanks for watching Karla REPLY

[@karlaaschoff4640]

it gets white when I disconnect the ribbon.. but no picture is displayed. by the way, it`s not karla watching.. it`s her boyfriend.. I have just started working as an electronic technician and I am already coming across some challenges here. I could find the repair and service manual for this sony bravia lcd tv, but it only helped on identifying the flash troubleshooting and the VCCs out of the PS.. back on the backlight.. sometimes it doesnt turn on... it seems like the main board is also malfunctioning.. as for the t-com, when I checked the fuse in it, I got the 12v and the other pins also have low voltages.. that`s why I think it`s not the t-com... I don`t quite understand the concept of lcd panel... could it be cracked or you are talking about the board inside of it ?

[@bigdog8882]

Hey, what kind of voltages are U gettin on the output side of the T-con with the panel hooked up?

[@karlaaschoff4640]

lol, I didnt check the output.. geez.. how stupid I am. I will try to check now... but like I said,.. the mainboard is also not very good. sometimes it doesnt turn the t con on.

[@bigdog8882]

That's the name of this game "Live and Learn" lol. What gives u the indication that the main is not turning the T-Con on?

[@mossiahgarvy]

Big dog hats off to you. Now. I have a Toshiba 55l310u, the backlight is ok, sound but no picture. So I unplug one of the ribbon cables from the drive board and I get picture . What's the fix? Thanks. Barry new to your channel

[@chieftin12]

Very informative, to the point and easy to understand! Thank you bigdog8882

[@jcgarcia35]

Hello... I congratulate you for sharing your knowledge with those of us who are starting. Besides, I wanted to ask you a question. I have that same model of tv and what mine does is turn on and the logo appears with horizontal stripes but the screen looks perfect. After several minutes the leds turn off but the audio continues. If I turn it off and turn it on again, it looks good again, although a horizontal line is noticeable at the bottom but not as visible. What do you think might be causing this problem? Thank you so much.

[@harakatabderrazak1]

Hi...i belive the second step after 12V is looking for other TFT voltages VGH, VGL, VCOM, HAVDD....most issues in Tcon are related with DC/DC IC

[@bigdog8882]

Okay, Thanks.

[@bigdog8882]

Thanks again! Really appreciate that and Thanks for watchin.

[@basheerkhan6040]

bravo man well explained and i learnt a lot from this video man, keep it up man great.

[@bigdog8882]

Thanks for watching.

[@LPJMagicmusic]

BASHEER khan for sure man, me to man, I've got a proscan 55" thats having this issue man. This man really helped me out man.

[@acrossphilippines6338]

nice video bigdog..very informative...one thing i want to ask..regarding the TCON that you tested on the last part of the video with the power supply...you test the fuse for short...what if the short to ground is from the other side (in the input if may i say)..is that means the short is on the motherboard...or when the safe time to replace the fuse of the tcon in order not to blew up the motherboard. i hope you understand..thank you very much..God Bless..

[@bigdog8882]

Just unplug the Mother (mainboard) and recheck to see if the short goes away. Easy

[@Mr1970827]

Hello and I really appreciate your video. I have a similar problem with my 75 inch Samsung OLED TV. It has sound but it does should a blue screen only. I was told that it could be a main board and I wanted to know what your thoughts could be? I want to say thank you very much for your input. Lastly, do you have a law enforcement background?

[@yrtuag]

Great job. Just getting into TV repair. Subscribed 👍😎🤠

[@marfemuli7143]

very informative video...tnx mate...please upload a video about "TV IMAGE SOLARIZATION":..i want to learn a fix for that kind of TV issue. looking forward to it, thanks and goodluck! :)

[@AlaskanMainah]

Bigdog, nice in depth video. What if my backlight is flashing? I can see it flashing through the screw holes with the panel off. Which board could be the issue? I didn't see any damaged capacitors.. Please help! Kids are getting crazy over here.

[@bigdog8882]

Most likely You have bad led's inside the tv. kzbin.info/www/bejne/o6bbe36GlNCfjKs

[@AlaskanMainah]

@@bigdog8882 Mhmm. I got a UN60J6200AFXZA thats pretty much identical. Well it looks like I got some work to do.. Not looking forward to the "working on a car" position haha. Thanks Bigdog

[@r.f.2366]

My Samsung UN55NU8000 is in an endless on/off loop (no image, just welcome sound and panel lights on/off) since plugged to power, this every 3-4 seconds. What could be the problem?

[@droski33]

Un82nu8000 backlight and sound but no picture here

[@r.f.2366]

@@droski33 no endless loop? Were you able the cause?

[@setorder]

I have a LG 43UF770V and it has no picture, no sound, but the backlights turn on. I replaced the T-Con board but, didin't change the result. I then baked the motherboard (or main board) for 11 min for a reflow but, that also didn't change much. Before I did all that I noticed that there were some negative voltage readings on the right hand side of the T-Con board and wondered if it was normal to have the ground lead on the chassis but have positive readings on the left but, negative readings on the right (on the T-Con Board). I did not reverse the polarity.

[@bigdog8882]

Yes, thats ok because the t-con uses a differential signal. One goes positive, one goes negative.

[@jdrs4214]

Would it also be wise to connect an small, low voltage illumination lamp on the open fuse to trouble shoot the board as it’s powered on???? I think I saw a technician do that on a tube television, but with a household incandescent 💡.

[@1tonzz]

great job thanks, good looking out, keep helping

[@simple8818]

Hi, I have 60" Samsung (UN60F6300AF) which I replaced all the LED strips band are working. Unfortunately now the video is all damaged. Parts of the screen is perfect while another part is completely dark. There are other parts of the panel that colors are messed up. If all the voltages on the t-con board check out could the panel be bad? In other words is it possible the t-con board is still bad? Thanks.

[@riolenardokarokaro1686]

I had half good and half bad screen, so i put off the ribbon cable (side on bad screen) beetwen tcon and lcd panel, clean it with rubber before put it on. Unfortunately, the ribbon cable got burn (two pin of 30 pin) leave with black screen both side screen but audio and blacklight on. Where do you think the problem been spread, tcon or bad panel ? Thank you for your sharing with intuitive style

[@kennethpappas]

always appreciate your videos. how can you test if you have a bad panel? i got a 50j6200 with backlight, no picture or sound and when i power it up i can see red light flash 5 times? already replaced tcon and main board.

[@bigdog8882]

Just unplug the ribbon connectors going from t-con to panel ONE at a time and see if half the display comes up. If it does then you got a bad panel. However if you replaced t-con and main, Ur panel is probably bad anyway.

[@ampecsu]

12:26 "Most" or "All" because a couple of mine are not reading good voltage?