Hisense 75 inch ROKU TV, red light flashes but screen is still black; Full Repair!
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- เผยแพร่เมื่อ 11 ต.ค. 2024
- Hisense models 75r6e3, 75r7070e2, etc. This 75 inch ROKU model will power on, the red light at the bottom flashes, but we have a totally black screen. In some cases you can see a very dim picture. If you hit a button on the remote you can probably still hear the clicking sound through the TV. So if your TV is on an Input you will have sound but no picture.
So what is happening in 99% of the case is these 75 inch hisense TV's need backlight replacements. How to tell for sure is if you put a flashlight up to the screen you can see the Home Screen or a picture.
This is a step by step TV repair tutorial on how to replace the backlight's on this model which is the Hisense 75R7070E2 model.
Music: www.purple-pla...
Where to get the Backlight Replacements for 75r7070e2:
www.shopjimmy....
Backlight Replacements for 75r6e3:
www.shopjimmy....
The Art of Troubleshooting & Repairing Modern Televisions Course:
bigdogtvrepair...
All the videos I’ve seen about how to fix this… have inspired me to get a new one.
I can't believe I watched and UNDERSTOOD that entire video! Great instruction technique. Thank you.
Glad it was helpful!
Much appreciation and respect for this repair! Fantastic job, Big Dog!! You ARE the man!! God bless...
Remember to replace all the LED lights not the ones that are bad all of them because they are based on hours
By backlight went out on my tv and I bought a new one thinking I’d have to go to a repair show for the old tv. But found out what the issue was because of your videos, going to attempt to repair the tv next week. Thanks again!
We had our Hisense TV for under 2 years when the backlight went out. After watching your video, I have the confidence to fix our 75R6E3 Hisense 75" TV. I ordered the parts (14 LED strips) and tools needed which all came in and I plan to do it this Saturday. Thank you for the great instructional video @BigDog8882...I'll post again after I finish on Saturday..fingers crossed!
I have the exact tv with exact issues. Wow! I followed every step and own TV. First time attempted
Damn, u don't miss. Kept telling myself no way it's faulty backlight. Replaced main board twice, replaced power supply. Turns out I wasn't shining my flashlight in the middle where the Roku shows up when TV powers on.
You sir are a master, thank you for putting out videos like this. I have enjoyed watching your videos and when I have watched them all I may order your repair course.
Hi BigDog nice to see you in action again and share your great wisdom.
Hey BigDog, I used this video to fix my 75h6570G, went ahead and just replaced all LED strips instead of replacing a single LED like you did, but wanted to say thank you for making this video you are amazing
Soldering is an art form. Very nice
You have a lot of patience! Surprised you didn't swap out the strip but went to board level repair. Most of us don't have the equipment.
Thank you for this detailed video. I followed what you did and was able to get my TV back up and running.
Hello sir. Just wanted to comment on how informative this video was. Unfortunately it was a fail for me because i cracked the screen on my 75”. Too big for one man. Note to everyone. Use two maybe four ppl for this job. Keep up the good work. And thank you.
I also just cracked my screen after I had replaced all the back lights and was putting it back together. lol. Oh well I learned a lot. I would try it again if I ever needed to.
Looks like BD is gonna need a bigger work shop for these bigger TV's along with a helper. lol At 72 yrs old a 65" is as big as I want to go and that is a chore for me. Give me a 55" all day long. We will see. Love your channel!
Thank you for the great detail in showing all components and how to tackle the problem. You make it so easy to make it easier to work on my tv
Great job as always! No need to change the strip if the rest are good. LED’s are way cheaper than buying a strip. Maybe a little more work however you get the practice.
you no chance to open screen often;;;led have hours lifetime work :::good change all even after a crazy the good tech, did it is delicatet work chance to crack fragile sceen is too hight
My tv is sharp 70inch 4k at
First of all started with turning off and having the stand light blinking ,, then after that went black screen , we replaced the backlights, and still doing we replaced the motherboard the t-con the power board and the other board that was left to replaced ,, tv working ! But now we have this ghost black spot right on the top middle of the tv ,,, can maybe tell me what else we need to do ,,? Please help
You are indeed the BigDog, sir! Greatly appreciate your tutorials!
I´m never buying an Hisense tv ever again.
Same broke 3 timew this year
It doesn't matter what TV you buy TVs are built on hours there are not like the old school TV
After this 70 yr old gal watched this to the end, I decided I would just buy another TV but not a Hisense Brand. Enjoyed learning though but I just dont have the patience to take mine apart.
@@whereswaldowhereiswaldo3144 there are good tv but these cheap TV are designed to live less than 2 years. I have lcd TVs with 20+ years of operation till this day. It is insane to see what pieces of garbage they sell these days
You're misinformed. All LED TV's will have this problem at some stage of its life. Secondly, it's internals are shared with many other brands like LG.
If you wanna avoid such a problem, consider upgrading your TV every 3-5 years with a newer one.
With that music, I expected Jason to sneak up behind you, with his hockey mask snd machete 😮
What do you usually charge for a job like that? Service call and labor "Ballpark"?
@@samsscia Like around $335 on a 75 inch
😆😆😆😆
@@bigdog8882What is your hourly rate, and markup on parts? Thinking of doing this for friends & neighbors. Thanks, great vids!
I think I said this before, if you have the room, get two tables end to end, and simply lift and move the screen over to the other table, I have heard about those suction cups letting loose, I don't see how, but I guess it can happen, then buh bye TV. I have salvaged many cracked screen TVs, good way to get a feel of how easy or hard things break. The diffuser isn't real easy to break, the screen is the most fragile. The polarizer films are flexible, more of PITA to handle but not easily damaged.
I've been doing electronic repairs for 23 years please do not use the suction cups it will crack the screen
@@whereswaldowhereiswaldo3144How so? I see them used a lot, only problem I ever saw was one came loose and they dropped the screen. Personally I think the safest way is have two tables end to end, and slide the screen over onto a blanket using two people, lifting as little as possible. small screens are not such a big deal. 65 and up become kind of hairy.
Thank you for the video. I will now attempt to fix my 75 inch Hisense TV with the same issue.
Good luck!
Did you get it fixed
I just followed this step by step. I have the exact same TV. Backlights now work. But now all I have is a white screen
Double check your connections on panel driver boards and tcon board.
Did you get this issue fixed? I’m currently doing this and wanna be prepared if i run into this issue
No. I threw the POS in the trash! I’ll never buy Hisense again
Thank you! I managed to fix my* TV! hope it will keep working, I will replace thermal paste later...
I used table frame that is wide enough to place the TV on it without damaging all the boards on the back, that way I was able to access both sides of the TV without flipping it, I used big cardboard as "backboard" under the LCD panel when removed it.
I just replaced backlights in a 75 inch hisense couple months ago. Went a picked up a Onn. Roku and a 75 inch TCL last week both needs backlights. 😅
OMG! Just asked a question about this in another video of yours. 🤦🏻♂️ very detailed videos. Thanks bro
You got it. Thanks.
Question bro what is the multimeter called for testing the LED's?? So I can buy one
@@rickyricardo5330 "TV backlight tester" just order it online. EBAY, amazon, banggood, etc.
My tv had the exact symptoms you described and I took it apart and put the meter on the terminals as you did and I got no voltage and no lights lit up. I did it plugged in of course.
you are awsome dude . that was cool . i've got a 75 an the same problem . it reset for awhile . but thats quit now . just wanted to say thank you ! i learned alot .
One bad LED makes the whole TV go bad. It's engineered that way to make us have to buy new TVs. It's called Planned Obsolescence. If the leds were wired in parallel, the tv would still work if one went out.
Yes ofcourse. Planned money making.
Great video Bigdog , just changed my back light, no worries, thanks again man , keep up the good work 👊🏽👍🏽🙏🏽
WOW This was perfect very informative. Wish I had a picture then I'd know how to fix it. But I have nothing happening at all
Great video big dawg and you even showed us what the mistake was.. good stuff man
i am afraid to open tv's larger than 43''-50'' because of the screen...but when i see how you press those cuppings on this 75'' i take courage :)
Sooo, am i safe to assume that this is the exact same procedure for the 75" Hisene model 75R6E1? Orr should i keep looking for a video with that exact model?
I only ask because i absolutely love how you explain what you're doing while you're doing it and in a clear understandable manner!!
Soo, i really hope i can use this video with the model i have..
Yeah, same one even though they may use different strips if your going to get all the strips which is highly suggested.
@bigdog8882 Yes!! Thank you!! Actually did start the repair process earlier today and followed your video. I got to the part where I took all the small screws out of the outter bezel before flipping it over, but I had to stop there because I have it on just laying on the screen on 2 plastic horses and some thick Styrofoam as the "table." I was afraid to flip it over by myself because it is now really flimsy and I was afraid of cracking or shattering the screen. Also, I was afraid of damaging the boards on the back because those 4 metal "feet" weren't gunna hold it and the entire weight of the TV would have been on the boards.
Soo, I stopped there for today, but I am making good progress and I only have you to thank for that!!
Your video of showing and explaining everything you're doing as you do it have been nothing but a guided blessing!!
I'm gunna continue to work on it not tomorrow, but Wednesday. I'll definitely keep you posted!!
I hope you don't mind if I bother you if I come across any other questions? I'm sure I will..
Would jumping the individual defective LED with a blob of solder work on this model?
I wouldn't recommend that. They wont last long because of excess current.
Guys, I tried these steps multiple times and it worked.
Step 1 - Remove the power from the socket.
Step 2 - Press the TV power button for 30 seconds (Not in remote, It should be on the TV)
Step 3 - Connect the TV directly to the socket after 60 seconds and turn it on.
If it doesn't work, try it for 3-4 times.
Also, check the number of times the power light blinks, it indicates what cause the problem.
My case, it was 3 times and after repeating the procedure it was 5 times. And the next time it went on.
Good Luck guys 👍
This single little old lady understands these instructions clearly but it's a bit too much work for me. I'll donate my Hisense and just by me another non Hisense tv. Hopefully one that has a long life backlight. 😊
Need a giant dining room table for that monstrocity.
Wow, you're amazing. Nice job. Thank you very much for such a wonderful video!
Your very Welcome.
I had 2 Hisense TVs both blackout at the same time in two different rooms.
When I did the Insignia 39" I changed all the strips.
Nice job Mr.
Great fix Marc thanks
You bet Cucumber man.
Great tutorial🫡 Can you show me where to buy a screen replacement for that TV??
No screens are available for purchase. Almost would be the same price as the TV. Its the most exspensive part on the television.
Well sob this is the same TV I just got, Hisense has become the new TCL for bad backlights. I'm seeing a LOT of bad backlights. "Hisense Roku TV" will show on the screen then it will go away and restart then show it again, so make sure you keep watching. The backlight set is about 30 bucks. BTW I tried a 58" Hisense yesterday, the backlight wire was red and black, the black was positive, red negative, it was even marked on the connector N and P so they will be backwards like you said.
Hey as a mechanic I always would recommend replacing parts in hard to reach spots if I am already going in. Because just cause I replaced one part with 300,000 miles on it doesnt mean the other parts reset to 0. So my point and question here is with the other LEDs how long does a repair like this last? Like on a car certain parts I know absolutely should be replaced and some I am like lets just take it case by case. So as a 1st timer and not someone who will do this too often do you think i should just replace all the bulbs?
Yes, just replace ALL the led strips.
Thank you for sharing your knowledge.
I enjoyed the helpful content. Where would I purchase a: 65 inch Hisense replacement screen?
I would appreciate any information.
Hope you have a great day, keep up the good work.
Can't believe they can't make a compensatory circuitry to keep the bulbs going if one goes bad!
Too many light bulbs in series on the same Line.
@@bigdog8882 True but there has to be a way to put some kind of a jumper type device to let it bypass a bad bulb & keep the others on. Probably wouldn't even notice 1 bulb being out as well.
@@edwardanthony7283 If they do that then the TV companies would never make any money selling new TV's. HaHa!
@@bigdog8882 Ooh! Got it.
Okay bro my first time i attempt this repair and it worked! 75 inch hisense but different model than yours. Only one question I completely destroyed the white backlight white sheet thats glued with the led strips. Is there anywhere i can buy this?
GREAT VIDEO AND VERY DETAIL
Thank you for this information I now know I need to pay a professional 😅
Why fix the LED strip instead of replacing them? I would worry about a callback
On this Model, haven't had any problems. But other TV's it may be good to replace the LED strips. Call backs are my Job though, lol.
Can I just buy the entire strip and replace it? I’m not trying the whole soldering thing. My eyesight won’t allow it and I don’t know how.
I found one of these models in the trash. Now I know why it was put there lol
Hi, if I put a flashlight on my tv screen I could see Hisense Tv flashing on and off. Could it be the LED strips or the motherboard?.
What replacement LEDs do you use to replace individual LEDs?
Im new to this. Thanks again for helping me with my recent tv. I need to fix my old one.
When you hook up the multimeter, what switch are you turning it to (v, capacitance, ohms, etc)). Exactly where on the strip and exactly where on the wires are you touching? I couldn't tell😢
Well if your testing the voltage going to the strips, U would put your meter on DC Volts. But I was using a *backlight tester* to light the led's up.
hey BD, I recently fixed an Insignia which i thought was bad backlights since i had image with flashlight but it ended up being a bad power board!
Yes, I had a few TV's where the backlight circuit was not driving the led's.
Hey Big Dog,, You mentioned that some have 2 pin led power connectors ( 75R6IG) , mine is like this and board says it should be 98V, when I check connector it's 0V across them with power on,, is the LED driver most likely bad?
Great Respect Sir!
I’m in Chicago is it possible that I can get you repair my 50in Hisense Roku tv it has the same symptoms as this 75in you repaired
Hi, I changed all the strips with new LED strips. Check them out like you did. They all light up with the tester. Plugged TV to working electrical outlet turned TV on, no lights. What happened? So much work for nothing.
i try this and now i see lines all through my screen ...damn!!!! i was really careful around that board with the connectors. so you say nothing to do about it if they got a little bent? so should i throw tv in garbage ? just asking
hi I have a question if you can respond as soon as possible Hisense 75 inch red light constantly blinks no power red light constantly blinks when you disconnect it and reconnected will not stop blinking
what happens if the screen gets damage upon lifting it, is there a website to order a replacement Screen?
@BigDog8882 In previous videos, you always suggest changing all the strips. Were there none available or were the strips too expensive? Or was there another reason why you just replaced the individual LED's?
I have the strips for the 75R6E3 which I discovered were different. I mentioned that in the Video. So I just fixed this one just to get it back to customer in the time frame I promised. Actually if you try to replace all the strips on this 75" Hisense, you risk tearing up the white background paper in different spots and no matter how good you try to tape it back, the TV picture looks like shii. I havent had any problems with previous 75" hisense with just replacing the one bad strip. Just turn the brightness level down to "Bright" or "Normal".
forgot to ask. Is that the overhead light making the ring in the video?
Probably so.
Is it always the LED strip when it’s this symptom ?
Changed LEDs and now it’s flashing white black red green cycling through? It’s bright though?
I have the same issue and i bought the LED tester and on all 4 sets of wires the back lights come on running at about 76.5 volts. Any ideas?
This is real technical issue not something that can fixed over the phone🤦🏾♀️
Hi I have a hisense 55" U6 series that has no picture but a bunch of vertical lines are streaks on screen when you switch it on
Can you help please
i have the google one 75 inch and it screen will flash then the power button will flash 20 times i can use a flash light and see the image on the tv do you think its a wire ?
I have a screen that is shattered, is there anyway to buy a replacement screen panel everything else is fine.
No, TV screens are NOT sold separately. They just want u to buy a new one.
Thanks man!
I gotta know how much would you have to charge for this repair. Seems to me your talent was worth more than the TV value.
I fixed the LED on one of these and then cracked the friggin screen clipping it back together. so pissed at myself.
Happened to me more times then I want to count.Worst feeling in the world.
Thank you!
BigDog8882 I have the same TV but I have backlight and sound but no picture what do you think that is
Need help. My tv is sharp 4k 70 inch. first my tv was turnnig on we could see the logo and then went off , the stand by red blinking light on,,, so it was a black screen ,,, so we replace the backlights. And it did not work ,, we replace the powerboard and still doing it. We also replace the motherboard ( mainboard) and the t-con and the last board we also replaced , ,, so tv working now ! But now we have this black ghost spot on the top middle of the tv ,,, what can we do now , please help !
Sir please gud my TV as well tell me some steps, how may I contact you
Listen when he says leave the 4 screws in before u flip it. I broke the corner of my screen bc I missed that part.
Just wonder if most of the bulbs are interchangeable..
Ive got a question maybe u can help me with. My 75" ONN TV will turn on and run fine for about 2 hours and then i get a black screen. When i put a light up to it like u did in the video, i dont see anything at all. Now, if i unplug the tv for about 15 or 20 mins and turn it back on, it work again, but usually only about half the time as it did before. I try the whole thing over again the next day, and it does the same thing. Would u say its a power or main board problem? Thanks for any help u can give me, in advance.
#shawnyMike my was the same we replaced the motherboard.
Is there any way to do this without a variable power supply? I've just been using my multimeter to try to measure resistance to find the burnt LED, but my readings are WILDLY inconsist for some reason. I'm beginning to wonder if there's some reason I'd get inconsistent readings from a single series of LEDs.
I'm basically just tracing power, right? So I START at the beginning of the series, leaving a lead. With my other lead, I'm tracing power through each consecutive LED.
I feel like I'm just making a rookie mistake somewhere that I'm just not noticing. I haven't done something like this in like five years and I wouldn't consider myself a professional.
Use diode mode instead and touch the two points between the LEDs and if the LED lights up, it's good, if not then it's bad. Also you do this with no power running to the tv
If multimeter doesn't have diode mode, use 2 AA battery's instead to test each LED. Could also use 3 9v battery's connected together to make 27v and test a whole strip of LEDS instead of one by one.
I got a hisense backlight problem but i can't find the led strips no where
Whats the Model?
@@bigdog8882 43R6E3
They have 3 different models my led connector is in the middle of the strips instead at the top
@@bigdog8882 hisense
Aliexpress
My 75 inch Hisense roku tv only last 2 years , just long enough for the warranty to end 😮😂
No mention of the big big ass spot where the suction cup messed up the screen?
It will go away. Its not permanent as I mentioned in alot of other vid's.
👍👍👍👍👍👍
Is that just a volt ohm meter
I have one that has a red light on but no picture. No picture for even one second.
I have hisense one time never time
I think mine just went bad. It only lasted about 4 years
Cover me.... im goin in BigDog...🤞😉
I would like to take my tv to your shop?
Mine is won’t turn on or red light
Just dead😊
my red light is solid and wont turn on
if yours is taped down instead of screwed then don't bother. on the way to the new TV store for a brand new one
Good work but talking to much time to open the tv,we want to see tutorial not all the opening process
Ok where does the come from I have the same problem what is the wire I like your video but give better info
Sorry, Its the wire going to one of the led strips from the power supply.
I solve
I fixed Flash when you put on tv one of the led was broken just remove the and soder a brigh that made it work