65 inch TCL TV, power light flashes but no picture. 65s405 Full television repair.

This is a 65" TCL (Roku) Led TV that powers on, may still have sound, but has a totally black screen. If you put a flashlight up to the screen you will see an image on the screen. The model number of this TCL TV is 65s405.
In this video we will troubleshoot the backlight circuit on the Power Supply board and pin point that the problem is definitely one or more bad led/backlight strips.
This is a full TV repair with the entire disassembly, repair, and reassembly of the Television step by step.
TO PURCHASE PARTS AND LED STRIPS FOR THIS TV...
www.shopjimmy....
TO SUPPORT THIS CHANNEL...
bigdogelectron...

[@franciscoestrada1411]

I ordered the led strips from Amazon, replaced them and the T.v works again. Thank you sir, god bless you. Cost me $35. I paid $600 5 years ago for the tv.

[@stevecarroll1038]

I can not express how grateful I am for this video! You saved me so much money and the step by step instructions were super helpful. You are awesome my man! THANK YOU!!

[@bigdog8882]

Great to hear steve.

[@amccargar2]

You’re considered a real life Super Hero to the DYI Dads around the neighborhood! Thank you sir!!

[@bigdog8882]

Appreciate it! Much love to the Dads in your Hood.

[@mikejones-qz1wk]

I have a 65S425 and it worked perfect !!!!! Thank you friend , i got this tv for free and spent $36 shipping and all on ebay , so i am pleased !!!!!

[@latinpapi707]

Thank u for the video. I followed your instructions and just fixed a broken 55” TCL 4K tv. You’re awesome. I feel good about reducing e-waste and giving my tv a second chance.

[@who922]

Thanks for the video! My 65 TCL was a little different, but close enough to get it fixed! It only had 6 strips of lights so I get to send one set back! Great work! I'm a computer tech and I brought it to the workshop over Christmas break and we did it in about 2 1/2 hours!

[@TampaTec]

Thanks for showing us What the flux is going on. u Earned 👍

[@Shevokf]

Are you in Tampa? I need my tv fixed

[@cschuh4695]

TampaTec, your videos are great, too... I've subscribed and watched a bunch of 'em... You're so knowledgeable on so many subjects, it's a wonder your head isn't bigger... hahaha... Thanx for your time, and keep up the good work...

[@Muller3773]

Thank you so much for this video!! My TV randomly went black one day but it still powered on and I could hear the volume. I watched your video and then ordered the new LED light strips and replaced them all and it’s working perfectly now. Again, thank you so much for this help!! Lifesaver!!!

[@AbhayR2077]

May I know from where did your order online?

[@javonhagins9882]

Me to we're can get at

[@kimberlythomas8366]

You are the man!!! I was loosing my mind doing all the reset hacks and tricks. Thank you for sharing you knowledge and experience .

[@pauldouglass3797]

Thank you! Great step by step guide. Just fixed my TCL Roku 65” using this video. Worked like a charm. My newer one just went out too but it seems to be a board issue. Luckily that one is under warranty and is being swapped out. This video got us up and running while we wait for that one.

[@TalentedAshley]

Omg Paul that’s awful I’m so disappointed in how quickly these go out

[@bigdog8882]

Glad it helped

[@lstruggy]

@@bigdog8882 this is me rn how much would it cost me to fix is it better for me to buy a new one Black Friday coming up seen some $447 65” Samsung Best Buy today

[@robertpray1064]

I found you some back. Love your vids. I taught system analysis and development of training materials for AF education development and have to say your work is excellent! You help lots of folks and I've learned a great deal. Awesome!!!

[@bigdog8882]

Thanks Rob.

[@rsuave109]

This gives me the confidence to go ahead and do the repair myself. Great video. Thanks.

[@supervisorhill1956]

Wow, got one for free just to play with and now I have a tv for sale. Thank you

[@timblackwood9731]

Thank you so much for taking the time to put this video together! I was able to use it to save my TCL from the dumpster! Merry Christmas 🎄!!

[@1903tx]

Nice to find a vid that shows diagnosis. So many on here just show how to blindly swap parts.

[@BinDabbab1]

Thank you man for this amazing video Greetings from Saudi Arabia

[@codyjoines517]

Thanks for the video man. I just ordered all new ones for 28$. Hope it works. But your video made it easy to take apart. Thanks

[@bigdog8882]

No problem Cody 👍

[@PantherU]

You're a hell of a teacher.

[@bigdog8882]

Thank U sir! Blessings.

[@sakurayimpofu2420]

Great and aspiring teaching

[@homer9269]

Thank you BigDog you helped me a lot. Took me a few hours but I got it done. Thanks again

[@bigdog8882]

Glad it helped. Nice job!

[@linksrepair8078]

welcome back hope you`re ok and in good health and another good repair thanks

[@ilovemyyorkies8415]

Thanks for making this video, you saved me $$ and my TV!!

[@aliassaila8037]

Amazing repair, professionally done 🥰

[@amraines64]

this video is still helping tons. thanks so much!

[@bigdog8882]

You're welcome!

[@alfredoserrano8829]

Excelente explicación paso a paso desde el primer tornillo al último tornillo , ahora es tener el valor de desarmar la televisión

[@slurpee_blue5445]

Thank you for this video. I was able to repair my TCL tv instead of throw it out. Awesome!!!

[@lloydprunier4415]

Like how you roll with the whole task. The clip on edges and tiny screws are a real challenge. I just replaced a power supply in a 65" TCL and now see that the screen is cracked. Is it possible to get a screen and is it cost effective to do so. It's not my TV I am just trying to do a favor for my sons exe-boss no not wife! I'm in my 80th year on this earth and I'll keep working on stuff until I can't!

[@un4gtble14u8]

Thank you, My TCL 65" not sure if it's the same model, looks the same. Used my phones flashlight to bring see the menu's, tried restarting it... and did a factory reset. It's the damn backlight and only had this sucker about 3 years too. I repair computers, I'm not going through all that to fix it. SOB... grrr. Gotta buy a new tv. Thanks for this vid at least I know the TVs f'd and It needs the LED/blacklight fixed. Likely cost more than the tv.

[@444rcummings]

Thanks for the video. You save me a bunch a money I don't have.

[@carlosgarciaoropeza5480]

Thank you very much sir. An affectionate greeting from El Fuerte, Sinaloa, Mexico.

[@jasondept2594]

I have/had the same Tv Mines just went out 2 months before my 3 year warranty expired & they are refunding me my money & I was gonna toss it as they instructed but I think I may try this . I can still hear the sound and when I put light to the tv I can see the outline of the apps and tv shows

[@cschuh4695]

What a great video. Thanx bigdog. I have the same TV in a non-working state, and i'm about to tear into it. But I needed some guidance, and you hooked me up. Again, Thanx... [BIGDOG, I HOPE YOU READ THESE COMMENTS... YOU TOO TAMPA TEC...] UPDATE: SEVERE cockroach infestation inside my TV... I confiscated the TV from another guy who owed me... The cockroachs ARE NOT from my house... Just wanted to clear that up, hahaha... I vacuumed out all the bugs that i could find... They went all the way up into the top of the outer bezel, and down to the buffer boards... They had a dance party on the logic and PS boards... They were probably sending signals out into space from the WIFI card... I removed all the circuit boards, lightly brushed them down with 91% rubbing alcohol, and blew them off with compressed air... I did NOT expose the buffer boards to alcohol, as I don't know what is holding them in place... I reassembled the TV, plugged it in, hit the main power button underneath (not the remote), and NOTHING... Didn't surprise me, though... I tested the LEDs with my new tester... I can see light through screwholes in the back on all 4 circuits... I tested the standby voltage - NOTHING... I HATE BUGS!!! I'm about to buy a whole rebuild kit from ShopJimmy.com, unless one of you guys tells me to STOP, with some kind of cockroach information that'll save me a hundred buxx... THE END

[@CarlosMartinez-kc4oz]

Awesome man! I have one whit this problem! But live in Texas 😢

[@alfredoserrano8829]

Aplausos 👏👏👏👏👏👏👏👏muy bueno señor donde estas para que repares la tv mia

[@CosmicCreationsDIY]

Thank you ! Save me on this tv, it works!!!!!

[@bigdog8882]

Glad it helped

[@CosmicCreationsDIY]

Your CO detector kept messing with my head lol

[@alalan754]

My friend.. i have the same issue and i have checked all led all of them are fine.... So whats the main issue.. please.

[@jamespeters920]

Good to see you again!

[@leslieh6066]

This worked like a charm. Thank you. However, when putting the tv back together and putting the little black boxes back on (where the legs screw into), I pulled out the little wifi wire. Help!! You got a video on how to repair that?

[@Dyaxxis]

The way I remove some glued in "backlight paper" on some repairs I've done is by using a hairdryer on a "warm" or really low temperature setting to attempt to somewhat loosen the adhesive. The air temperature should be low enough to loosen the adhesive, yet leave the paper in tact without being burned. The situations I've had no luck with is when the adhesive is like a "super glue." As usual, this would be something done at one's own risk, but I thought to share the experience.

[@ctech14367]

Thanks for making this video, very helpful

[@joserodriguez-wm3bm]

i got to do the same thing is to mush work and i dont got the subcion cups good video👍👍👍👍👍👍👍👍💯💯💯💯

[@acava1956]

Thank you for your Videos they are very helpful. I have a TCL 65S431 it has sound, and lights up in a light blue but, I did your light test and did not see any ghost Images. This TV has No TCON board. Please Help!!! I am stumped. Thank you Arthur.

[@bigdog8882]

If the screen has backlights but no image. Its probably a bad LCD Panel/Screen.

[@exgenica]

Safety concern: shouldn't be wearing watch/rings/necklace/etc (anything metallic) while working on electronics. Example: necklace dangling at (36:50) High voltage circuits can injure/kill via electrocution and high current circuits can result in severe burns as jewelry can be even welded to a circuit and keep burning through tissue.

[@ronneilalleyne1657]

Learned a lot ,BigDog thanks

[@pietropuleo2662]

Professional work very good

[@centralvalley5595]

Thanks a lot video helped, Where can I buy that replacement strip part

[@wisher21uk]

Woohooo the dog is back nice to see you’re ok bud good fix No wonder the leds burnout they’re never stuck down, I always stick them down just saying 😁 Change your battery in the smoke detector here’s a $1

[@markkalembelembe323]

Thanks for the informative video

[@bigdog8882]

No problem. Thanks for watchin.

[@Jackson-pd2vj]

Great job Big Dog... thank you. Question. How much would you pay for this kind of job? And is it worth paying for or should I buy another TV.?

[@coreyb.8882]

Very detailed, good video

[@lstruggy]

Wow that’s a lot of work imma just pass n buy a new 75” 😮

[@stevec5000]

Do you ever worry about the suction cups being so strong they might crack the very thin glass?

[@tomkatfleming8563]

Great video. If you do not have an LED tester box, how can you check your LEDs? What voltage are you using to test the LEDs? Thank you!

[@bigdog8882]

You need a Backlight Tester or Programmable DC power supply. You can get an led Backlight tester for $40 off of Ebay, amazon, my store, etc.

[@tomkatfleming8563]

@@bigdog8882 Thanks for answering my question. I have an adjustable DC power supply but even if I purchased one from eBay, I have no idea what voltage to use. Can you help?

[@beasyphone]

Only found 1 individual LED out on one strip..Tcl ***s425 65"...REALLY hoping she fires up when I get this sucker back together lol. New strips in ( only 6) on the 2020 model

[@jamessutton90]

Hi BigDog, I do enjoy your video's always great info. I've done several tcl 65" the one I have now is kinda weird. Both the right, left side have backlight bleed. I've checked to make sure all was put back together the same. Let me know if you have any tips or remedies.

[@sevenofnine5058]

Where can I buy the led strips, I've been looking all around for my rca roku model rtru7027-us?

[@edwardanthony7283]

Again! All that for a few stinking bulbs. Wonder how old the TV is. Best to replace em all like I did on the 39" Insignia. Something went wrong with quality control via mass production.

[@audelioespinoza1934]

Good job, thx for this great video.

[@jonathanseagraves8140]

Bro.... are the legends true??? Can you really not hear that beeping smoke detector???

[@AbhayR2077]

Thanks for the tutorial. How much would be the cost of each backlight strip? I got the same problem in my TCL 55 inch. Kindly suggest where can I buy the strips.

[@bigdog8882]

Ebay or Shopjimmy.com

[@christorres953]

Are all led strips are the same for every tv ? I'm trying to look for a phillips leds but can't find them .oh by the way your video is awesome 👌. I had a couple of screws left but it was all good the tv is working 😅.

[@bigdog8882]

Thanks, but TV's only use specific led strips made for that TV. Use TV model number when searching.

[@mrshawterry6]

Goodmorning Sir, on the mic, i did everything you were doing,, but i misplaced, the screw on the bottom for the screen, do you know where i can buy those screws? Thank you.

[@CommEfornIA]

Mine just went out, I wish you were my neighbor.

[@alexserrano7770]

Gracias thanks ✌🏽

[@mickl8212]

Any reason why these current generation of TV's don't last as long as the older versions? I've just had the screen board capacitors short (not water damage)on my LG 49inch tv which in turn took out the T-Con board. It is four years old and just has normal household use. I would have thought a TV would last longer than that!!!

[@bigdog8882]

Noope!!! lol. Unfortunately modern Televisions use smaller components that have a shorter lifespan.

[@lstruggy]

@@bigdog8882 will I have the short life problem w normal usage w Samsung brand? My TCL also blacked out w sound like this after 4 yrs to the day I got ‘em 2018 😔

[@JerriRobertson1976]

Thanks to u I know what's wrong. I can't do this. And I have to get a new tv. 😔😔😔.

[@jonathanboileau9025]

I have a similar issue with a 75s405 but unplugging the power and back in will turn the backlight on. you can watch fine until you turn the tv off and it sits for a few hours. Can strips cause this?

[@bigdog8882]

Maybe, but could be a Mainboard or PS issue.

[@taxonomytaxontax]

Same tv here, replaced boards and backlight strips. Tv backlights still flash then stays off. Any advice?

[@bigdog8882]

Re check your backlight connections.

[@TheKisses81]

Do all 65 inch Tcl tvs have 12 led strips? Where do you suggest I purchase them from?

[@bigdog8882]

Use TV model # and order from shopjimmy.com

[@Bigbopperairguns]

What are your concerns on using a blowdryer up close to loosen up? The heasive before removing the screen so this won't happen?

[@crazy_busadday6908]

I'm having the same problem with my 65 in TCL Smart TV I don't know if it's worth replacing or should I just buy a new one which I don't have money for is the repair cheaper

[@Matthias130]

I had the same issue, replaced the LEDs, now the screen lights up, but no picture. Only sound.

[@bigdog8882]

Check the connectors and ribbon contacts at the t-con board to led driver boards. Check the ldvs cable going from main board to tcon board also. Make sure there plugged in correctly.

[@sergeyberesan5411]

Why you don’t limit current for led strips? Current limiting will increase service life of led strips.

[@MrMods-SlipStreamGT]

Subbed, good videos! I got a tcl 75s423 picture and sound no backlight. Already took it apart but I got no led tester, tried to test each led individually with 3v but I think each led needs more voltage to light up. Do you know what safe voltage I can test each led with? Each strip showed 135v for 7 led strip.

[@bigdog8882]

Not sure, depends on the model TV. I would just purchase an led tester.

[@MrMods-SlipStreamGT]

@@bigdog8882 i purchased a led tester. Seems like 90% of the leds are shot. There are 12 rows of led strips with 7 leds on each strip. I waz reading 135v on led wires black/red. Isn't that too much or is it reading return total 135v all rows? I'm a noob on tv repair just trying to fix this to use it for myself I got it for 40 bucks. Another question, I have a 60 inch Samsung with broken screen. Could I rig the power supply with leds into the 75 inch tcl?

[@abdallahelectronic19]

thank you ,i have a problem with this ic tea 1716 in led tv power supply NO POWER, her problem is that it was exposed to high voltage, and I found the main capacitors swollen, I replaced them, but the IC heats up greatly, but it is fine because I removed it and tried it in another card and it worked fine. Where is the problem? Is it in the components surrounding the ic tea 1716? but which pins of ic responsable for overvoltge or which components must be change smd capacitors and resestors or all .

[@bigdog8882]

Really cant tell you, just check surrounding components in that circuit.

[@abdallahelectronic19]

@@bigdog8882 thank you

[@Angel_cortes5355]

I’m doing this in a 75” Samsung but I’ve never done anything bigger than 60” any pointers when removing the Lcd?

[@bigdog8882]

Yeah, don't crack it.

[@bmw1200rider]

Are putting voltage to the strips to test them? How many volts? Or are you testing them with the tv plugged in?

[@user-be3yx2gn8b]

TCL65 P8S 모델도 같은 백라이트사용하나요?

[@garvinpope5549]

I have this exact tv my problem is the backlight is on but no display on my screen, I changed the T-CON , main board and power still nothing.

[@davidr___]

I just replaced all 12 LED strips but my TV still isn't working. When I plug it in, the screen will flash on momentarily, but then immediately go black. And if I hold a flashlight up to the screen, I can see there's stuff being displayed, but the backlights remain off. Any idea of what could be wrong?

[@dakotanelson4874]

Hey bigdog, my Samsung TV out of nowhere the left side is darker than the other part of the TV. I have alot of pets, so could it be dirty tcon connectors?

[@bigdog8882]

You have bad led strips on that side.

[@dakotanelson4874]

Okay is it hard to replace? And do you recommend any site to get parts off of? I just bought this TV not even a year ago.

[@metrork1]

LED Tester 0-300V Output Multipurpose LED Lamp LED TV Backlight Tester Tool

[@laykehicks8413]

My TCL 65" (65S450G-CA) died today while watching. The screen slowly went dim and now it's black. The backlight works, sound works, no menu's will show. TCL said do a factory reset - but we can't see the pin it tells us to input when trying it (and that's doing it blind watching a video). I don't know what to do.

[@bigdog8882]

You can try the t-con. But these are known for bad Screens too. May have to try the tape method if you still get the same problem with a new t-con board.

[@kylefolk9309]

Quick question about the replacement led lights, do you recommend getting TCL brand or is unbranded okay?

[@bigdog8882]

Any, as long as there NEW.

[@SayyiddinaFakhruddin-fo6yn]

I bigdog, how do I get the TV course here in jamaica and how much is the cost.

[@jameslewis2342]

I have the same size TV and it just did the same thing to where you cannot see the screen but you have sound what will you charge to repair it

[@guillermobarboza6709]

I have a 65S434 tv but all the backlights work and the power board all work but, I'm just in search for a screen. It accidentally got knocked over screen is cracked been looking and no luck for the 65 inch. By any chance you know where to find a replacement screen for tcl 65' smart android tv 65S434?

[@ashdanyelle8441]

Yea this was not the easy fix I was looking for. He is obviously very knowledgeable though. Great video but not doable for my limited experience.

[@elchapa2320]

How do I know the model number if it only says (Model: 65S4) theres no more numbers after that.

[@trinityadams2427]

I have a 65 inch TCL. Replaced the lights, but it just has a blue screen and no picture. Any idea what could be wrong with it?

[@bigdog8882]

Loose or damaged connector

[@trinityadams2427]

Makes since because it quit works when my niece moved, I reset it at her house got it working then it quit at my house while working, I changed the led today but has blue screen has sound just no apps showing, I’ll work on it another day thanks for reply

[@kadhmkazem5586]

❤❤❤❤

[@screen-protector]

Maybe someone will know. I have a 65" TCL with new edge backlight fitted. The backlight works fine on the backlight tester, but the power supply does not give a power to the backlight. It does give 24V to the mainboard and t-con. So, I've checked and on the backlight ON is 3.3V, when I take it to zero, no change, but the processor is getting warm and t-con with it. If I use my backlight tester, I see the TCL logo and TV is powering ON. How can I make sure that the PWM controller is not switching ON or is faulty in the power supply and that's no other fault? I've got 2nd power supply and is the same thing.

[@kriptoking6078]

I have one of these with a black screen, but has sound. I can see the back lights come. I have cleaned all cables, replace main board, TCON and power supply. It did have bugs in it. You have any ideas.

[@bigdog8882]

Bad LCD Panel (Screen)

[@kriptoking6078]

@@bigdog8882 Its not cracked or anything.

[@kriptoking6078]

@@bigdog8882 Can the screen controller boards be replaced.

[@bigdog8882]

@@kriptoking6078 No sir. But you can check for shorted smd capacitors on the boards.

[@javonhagins9882]

We're can I order the led at have same tv and pic when our

[@johndeloach503]

What's the name of the pry tool you used and where can I purchase one from?

[@bigdog8882]

Amazon or ebay, they come inside of a small tool kit usually.

[@PepPep2012]

It didn't work for me unfortunately. Exact same tv & exact same issue. Mine still just flickers but the LED lights don't come on. Any suggestions?

[@gilbertoporras1167]

what a good place to buy the parts anyone know just getting started on this project

[@josiah2833]

Where can I get a Tcl led backlight strip for a model 40s6500A?

[@peytonmote1089]

Hey bro I have the same model as this, when I shine a flash light into the screen I can’t see any apps but you could. The volume works, I see the little box flash then fades back out. But when I turn the tv on it instantly flashes on the bottom left corner then it’s a black screen is that point to the strips?

[@bigdog8882]

Yeap

[@metrork1]

LED Tester 0-300V Output Multipurpose LED Lamp LED TV Backlight Tester Tool

[@bibason99]

@@bigdog8882 please how can I get the backlight led and how can I know the number because my tv is the same like the one you just fix thank you

[@jasonhastings5538]

Grrrrr mine just did this!!!!