Trying To Fix: Samsung THE FRAME backlight replacment - How to open display???

[KYBOSH]

I came across this TV (UN65LSO3NAF) and would LOVE to replace the backlights and save it but i do not know how to access it. I attempted this repair not too long ago on a 50 inch model and cracked the display while tryjng to remove the bezel around it. Even after that display crack and i was free to do an autopsy on the remains i could not find a safer/proper way of removing the metal frame around the display. Does anyone know the trick to opening these FRAME TV displays? Im not above carefully taking a dremel to the corners but im pretty sure there is a right way to do this. I have looked at the service manual for these models and there is nothing of use in them about this.




Thank you in advance

[Diah]

they are edge LED BL. 90% the reflector side was effected by burning LEDs... start remove only when you have safe space to keep it open for long time in order to handle the plate incase it had this burn as i said.

[KYBOSH]

they are edge LED BL. 90% the reflector side was effected by burning LEDs... start remove only when you have safe space to keep it open for long time in order to handle the plate incase it had this burn as i said.

Thank you Diah. I have experience with these edge lit led disolays. Samsung had them on their SHUHD tvs about 15 years ago. They burned the duffusers to a crisp!

My issue issue is i dont know how to actually open up the display as the bezel feels like its spot welded. I cant remember exactly what how the bezel was secured to the display the last time i had one on my bench....

[Diah]

bezel secured on tv chassis... EasyBone had one time dealt with it.... strange he remain silence

[harp]

Maybe this if has no screw
https://m.youtube.com/watch?v=paYZAc1rcWs

[KYBOSH]

Maybe this if has no screw
https://m.youtube.com/watch?v=paYZAc1rcWs

Thanks Harp. No thats just the back cover. I plan to post pics once i have the panel stripped down as far as i can go. Just wondering if anyone has experience with this model. The way the panel is secured to the chasis seems to be exclusive to THE FRAME models.

[KYBOSH]

bezel secured on tv chassis... EasyBone had one time dealt with it.... strange he remain silence

I'll shoot him a PM. Maybe he can shed some light to this thread. Only a few threads came up on this line of TVs here on badcap and none of them documented any success or even a meaningful attempt at opening this thing up.

[KYBOSH]

Actually...paging Dr. EazyBone
You're needed in surgery 😁

[EazyBone]

bezel secured on tv chassis... EasyBone had one time dealt with it.... strange he remain silence

I have not dealt with taking the screen off. I only fixed a one connect box. I haven't seen one of these LEDs fail before.. but I did read somewhere where it's impossible to change them. Not sure if any truth to that.

Generally when I take apart Samsungs with frames/screens attached together they are held in place by snapping the bezel into place.. and I usually take the bezel and screen off.

Sorry Dr eazybone can't help on this one.. but take some picks with light on the back of it and maybe there is a way?

[EazyBone]

I also remember not being able to find replacement LEDs for it either, it's like they don't exist. Did you find a place that sold them?

I do remember the frame being strangely recessed and was a bit curious as to how to remove it but didn't put much effort into looking.

[KYBOSH]

I also remember not being able to find replacement LEDs for it either, it's like they don't exist. Did you find a place that sold them?

I do remember the frame being strangely recessed and was a bit curious as to how to remove it but didn't put much effort into looking.

I found some on ebay as well as ShopJimmy. It appears they are the same LEDs thats shared across the several different models but i wont be able to confirm this until i open the display up and look at the actual part number.

https://www.shopjimmy.com/samsung-bn...klight-bars-2/

[EazyBone]

Your right, I see a ton of them now. I would ask them then! I know shop jimmy takes a lot of parts, shit maybe all parts, from broken TVs I don't remember. But If they are able to break down new tvs I bet a service tech there knows. They have a chat feature when hours are open

[KYBOSH]

Your right, I see a ton of them now. I would ask them then! I know shop jimmy takes a lot of parts, shit maybe all parts, from broken TVs I don't remember. But If they are able to break down new tvs I bet a service tech there knows. They have a chat feature when hours are open

It never occurred to me that someone at a place like SJ would answer a question like this but its definitely worth a shot. If im not mistaken i remember they used to make YT videos on how to do simple repairs like board swaps a long time ago.

Ill let you you guys know what i find out from them!

[EazyBone]

Yea I would try and say, I'm trying to buy the LEDs from you or something, is it actually possible to remove the screen etc to replace them. Let's hear it. I have asked them questions before related to my buys anyway.. and they do answer. You can sometimes put offers in on their items like eBay (it'll show if possible) and get a Google search for shop jimmy coupon and get a quick 10 percent off. They expensive but sometimes I'm stuck using them.

[KYBOSH]

These Tech Support guys arent having a very good week it seems. The response to my first inquiry was "There are brackets to remove inside around the bezel frame held in with screws after that the bezel snaps off"

When i pressed him to flesh out his answer they replied with:
Remove the back cover, it SNAPS off with a Samsung back tool or putty knife or a 5 in 1 tool, there are no screws holing the back cover. Once the cover is removed, look around the edges of the screen assembly inside there are shiny clips with screws holding them to the back case. remove the screws and retainer clips The plastic frame can be removed then to expose the screen assembly, which has to removed with extreme care not to crack it over game over, there are address boards on the lcd screen which need to taped up and out of the way so they are not damaged. Using suctions cups remove the screen and set in in a safe clean place. Then proceed to remove the plastic sheet filters, first using painters tape, tape them together so they stay in proper order. set them aside on a clean flat surface. then there is a clear plastic reflector that must be removed to gain access to the led strips.
see this video- https://www.youtube.com/watch?v=8mQw73l3oYU

Im pretty sure that last answer was for your regular run of the mill Samsung TV being produced today.

Anyway I replied with the following and a pocture but haven't heard back yet.

Thanks for the reply Randy.
Your description of what I am supposed to be seeing seems a bit off but I will have another look tonight.
Here is a pic or the bottom of the TV. There are about 6-8 screws holding it to the chassis (I presume).
There is also 2 strange hollow holes near each end of the bottom. I speculated that the bottom is popped off (after the screws are removed) via these holes with some sort of pulling tool but since I dont have X-ray vision there is no way for me to know except to ask you good fellows who may have done it before. Any thoughts on this?

[EazyBone]

So that rectangular box next to the screw on the top is a clip so I don't have quite the orientation but it looks like that piece is the bezel so you would have to pry that piece above that clip for it to pop up. So it looks like you remove the back cover where I see L and the rest of that will come up and then you turn the TV on to its back undo those screws and then put a thin screwdriver or pry something to get that clip up and maybe there's more around the TV I don't have full orientation because we need more pictures

Also those holes that you speak about probably mean nothing actually. The TV is not designed to be pulled apart again but to be solidly shut. Samsung does not repair back lights they just replace the whole screen along with the frame when they do warranty service to the screen had to snap down somehow to get into place

[KYBOSH]

Okay! I said i was going to get it done (win, lose or draw) last night so Started at 12:30 and by 2:30 i was pretty much done.
I was able to remove the bezel without cracking the screen!

Here's a quick walk through for those who will attempt to do this in the future:
First I gotta give a bit of an apology to the ShopJimmy techs who gave me the instructions above. After re-reading the instructions I want to say that they were right for this model but the instructions were Greek to a person who has never seen it before. Only once you've reached your destination do you realize the directions the map were trying to convey. Not good as one wrong move can be very costly! Pictures are worth a thousand words so here are a lot of pictures for your guys. I'll use the ShopJimmy instructions (in bold), flesh it out with commentary a bit and provide pics for illustration.


Step 1: Remove the back cover, it SNAPS off with a Samsung back tool or putty knife or a 5 in 1 tool, there are no screws holing the back cover.
The back cover is held on the same way as most screwless Samsung TV back covers are secured these days.
It's much easier to remove the back cover on this FRAME TV though and in my case no tool was required.
It seemed like it wanted to come off easily. The back cover have ~10 button tabs at the bottom that have to be pressed and cleared first.



Once those are cleared there are clips on the back cover which attach to 3 familiar long metal wires running along the sides and top chassis.



I carefully used a pry tool near the top (against the outer bezel we are trying to remove) for the spots that didn't want to pop off easily.


Step 2: Once the cover is removed, look around the edges of the screen assembly inside there are shiny clips with screws holding them to the back case. remove the screws and retainer clips
Once the cover is removed, look around the edges of the chassis and you will see 11 shiny clips (3 on the left, 3 on the right and 5 on the top) securing the bezel to the chassis with screws.
Use a high quality Philip head screw driver (size 00 or 0) to remove the screw. They are secured with loc-tite (permanent thread locker) so it will be easy to strip the heads if you are not careful and firm.


Once that is done the clips easily slide out.

Once the clips are removed there is nothing left holding the bezel surrounding the display but it is still secured snuggly to the display by friction and likely a bit of adhesive here and there.
You can start to pull the bezel away from the chassis near the center of each size to get some clearance and wiggle room here and there. The bezel itself feels like its metal but it's likely a hight strength polycarbonate material so it has a good bit of flex to it like metal. Below I inserted a AAA battery to show how much (or little) clearance you will have to play with as you try to wiggle the bezel off the display.




Step 3: The plastic frame can be removed then to expose the screen assembly, which has to removed with extreme care not to crack it over game over, there are address boards on the lcd screen which need to taped up and out of the way so they are not damaged.

This is where I started sweating. It was not readily apparent how to remove the bezel but once it started coming away from the screen I got more confident. The edges are the most nerve wracking parts as you have to be very careful. You must create enough clearance to let the bezel slide off the display but you cant use any pry tools to as there is nothing protecting the display. One wrong move and its 'game over' as mentioned above. The corners only have a thin strip of black tape (half the thickness of electrical tape) protecting the screen from the bezel. But before I started I put blue painters tape on the films leading to the address boards to protect them.



I then placed the TV on its back suspended by a box which was about 4 inches (100 mm) high. This prevented the bezel from touching the work surface and gave me the freedom to work it off. I started on the side and top in order to reduce the amount of movement of the bezel near the address boards. Once I got one side up I put something to keep it raise while I worked on the other side. The gave me addition clearance for the other sides and the rest came off easily exposing the display in its entirety.



Step 4: Using suctions cups remove the screen and set in in a safe clean place.
I added more painter's tape to cover the entirety of the flex films so they would not get damaged as I used suction cups to move the display off the chassis. I made sure I cleared the display from the chassis (lightly lifting each side and corner to ensure nothing was binding) then I placed a sheet of paper at each corner to ensure any light adhesive that maybe under the screen would not stick again. I wetted the display at the spot where I was to apply the suction cups and carefully lifted the screen up and moved it over to the back cover with was waiting a few feet away. It was the perfect size and shape and allows for easy storage of the screen while I await the replacement LED. HARD PART DONE!



Step 5: Then proceed to remove the plastic sheet filters, first using painters tape, tape them together so they stay in proper order. set them aside on a clean flat surface.
Easy part which needs little explanation but I taped ALL the sheets and layers together (including the reflector in the next step) and stood it up against a wall out of the way.

Step 6: Then there is a clear plastic reflector that must be removed to gain access to the led strips.
I was expecting to see scorched earth here but was surprised to see the diffuser/reflector in relatively good shape. There was only 1 or 2 charred spots on it and there were some slight warping from the heat but nothing to cry about.







I used a precision knife to remove the bits of carbon there, taped the layers in order and stood them up against the wall for safe keeping.

That's the end of the disassembly.

The LED light strips are in plain sight and held down by small screws. Again use a good screwdriver as these too are secured with thread locker.
I think I may have discovered why the backlight failed too. There was one LED which looks like it popped off. It was sitting in its place secured by the reflector/diffuser and it was found at the scene of the crime (the middle of the screen).



The part numbers of the backlight for this TV are 40171A and 40172A.



Im going to order a new set from ShopJimmy and get this installed ASAP.
Hope this helps and thanks again for you guy's support.

[EazyBone]

Many of your pictures are broken. At least on my browser. Maybe too many in one post? Nice writeup tho

[KYBOSH]

Many of your pictures are broken. At least on my browser. Maybe too many in one post? Nice writeup tho

Sorry to hear this Eazy. Maybe a browser issue. They are sent to the server. I will try to DM you photos for your records in case you come across the TV in the future.

[EazyBone]

No need, I'll try different browser etc.