Samsung Television UE49KU6640 Backlight Replacement

Written By: Maarten N.
  • Comments: 15
Samsung Television UE49KU6640 Backlight Replacement

Difficulty

Difficult

Steps

14

Time Required

6 hours

Introduction

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    • Remove the cover at the base at the back

    Remove the cover at the base at the back

    Matthew Newton -

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    • Place the TV on a mattress or other soft surface to avoid stress in the TV.

    • By putting a folded blanket in the middle under the TV, the weight of the TV will be distributed more equally. This will help working safely in the next steps.

    Place the TV on a mattress or other soft surface to avoid stress in the TV.

    By placing a folded blanket under the center of the TV, the weight of the TV is distributed more evenly. This helps in the next steps.

    Matthew Newton -

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    • Loosen and remove the four screws from the holes.

    • Slide the base out of the TV.

    Loosen and remove the four screws from the holes. Slide the base out of the TV.

    Matthew Newton -

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    • Yellow clips are close to crucial electronics.

    • Check and remove the common interface card holder. If this is not done the mainboard can be damaged.

    • Red clips are approximately 40mm from the edge. Yellow clips are 25mm from the edge. Blue clips are at the bottom and green clips are further inside and need be forced out.

    • Mark a flathead screwdriver with a piece of tape at 35mm from the head.

    • Stick the flathead screwdriver in the side (paralel to the tv panel). When the screwdriver is turned it should unclip the backpanel.

    • Work around the tv to loosen all clips.

    Yellow clips are located near critical electronics. Check and remove the common interface card holder if necessary. Failure to do so can damage the mainboard. Red clips are approximately 40mm from the edge. Yellow clips are 25mm from the side. Blue clips are in the bottom. Green clips are more on the inside and cannot be reached. These must be forced. Mark a medium slotted screwdriver with a piece of tape 35mm from the head. Insert the screwdriver flat into the side of the TV (parallel to the TV panel). When the screwdriver is turned, the clips on the cover come off. Update all red clips this way

    Matthew Newton -

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    • Insert the screwdriver flat into the side of the TV (parallel to the TV panel). When the screwdriver is turned, the clips of the cover come loose. Repeat all the red clips like this.

    • The top of this TV is completely or partially fixed with double-sided tape. use the screwdriver to make room to cut the tape

    • Place something between the back and the frame to prevent the panel from getting stuck again.

    • Finally, release the yellow clips. Work towards this from the top and do not insert the screwdriver further than 25mm. Do not insert the screwdriver below the yellow marked clips

    Insert the screwdriver flat into the side of the TV (parallel to the TV panel). When the screwdriver is turned, the clips on the cover come off. Update all red clips this way. The top of this TV is completely or partly secured with double-sided tape. make room with the screwdriver to cut the tape. Place something between the back and the frame to prevent the panel from getting stuck again. Finally loosen the yellow clips. Work here from the top and do not insert the screwdriver more than 25mm. Do not insert the screwdriver under the yellow marked clips

    Matthew Newton -

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    • Release the four blue clips on the bottom by inserting a screwdriver and popping up the rear panel.

    • The back panel should now be loose except for the two green clips. When you are sure that all clips are loose along the edge, you can carefully force the back loose.

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    • Disconnect the two flat cables from the LCD panel.

    • Disconnect the cables from the speaker

    • Carefully pull the speaker off, it is secured with blue rubber plugs.

    De platte kabel kan losgemaakt worden door de zwarte clip voorzichtig over de hele breedte omhoog te klappen. Gebruik iets waarmee je de kracht over het hele clipje kunt verdelen terwijl je het omhoogklapt. Als het afbreekt is het einde oefening.

    Polleke -

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    • Disconnect the cable from the infrared module.

    • Release the clips from the infrared module and remove the infrared module.

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    • Release the four clips at the bottom of the protective metal plate.

    • Remove the metal panel by tilting it and pulling it away.

    • Unscrew the four clips.

    • Tilt the circuit and release the circuit from under the metal clips.

    Deze clips zijn zeer breekbaar, wellicht door de veroudering van het plastic. Hoe voorzichtig ik ook deed, ze braken alle vier af. Bij het in terug in elkaar zetten heb ik de metalen strip goed op zijn plaats gedrukt en een flinke dot hot-glue op de plaats van de afgebroken clip aangebracht.

    Polleke -

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    • Note that the plastic edge keeps the LCD in place. Make sure it has not come off when removing the back cover.

    • Screw four bolts into the back. These will support the TV and prevent the TV from leaning on any crucial components.

    • Now turn the TV over so that it is facing up.

    What size are the bolts?

    fraserbrydson -

    They are M8 bolts, but this might be region specific.

    Maarten N. -

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    • Place the TV towards the edge of the table so that the bottom edge of the TV can be reached.

    • The bottom edge is secured with plastic clips. Loosen it carefully all around. Take extra care with the gold-colored cables of the LCD.

    • When the clips are loose all around, the edge can be removed.

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    • The LCD panel is very sensitive. Pay close attention to the circuit vaporized on the LCD.

    • There are several ways to remove the LCD, the method below was successful for the writer.

    • Tape the LCD panel securely to the back with masking tape. Do not stick the tape over the golden connectors, but stick it between the connectors.

    • Prepare a mattress topped with a blanket folded to follow the curve of the TV.

    • Now that the LCD is properly secured, the TV can be turned over on the mattress with blanket.

    • Now loosen the tape and move the LCD circuit away from the frame.

    • Use the previously installed bolts to lift the frame away from the TV.

    • To prevent the LCD from getting stuck in the casing, it is smart to tilt the frame away.

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    • Detach the plastic sides from the backlight. These must be pulled up.

    • Mark the sides to make reinstallation easier.

    • When all sides are removed, the plates of the backlight can be taped together.

    • Lift the plates off the TV.

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    • Unclip the connector by squeezing on both sides.

    • Loosen the screws from the backlight.

    • The backlight now can be removed.

    Respect / Opinion / Pro - Contra

    Respect and Thank you because after 1HOUR DEEP (FFF.. yes that F.Word) searching You're the first that shows this Thick Edge Led and not that tiny hairtin completely different mounted versions!

    Opinion : Your tutorial is very good promptly and explanation is good also (this was the pro)

    Contra : key elements missing, layers of the white paper diffusors behind the lcd panel should listed by each if someone forget the order than it can be recalled by each described

    and my main head pain!

    You mention the screws that holding the led strips but nowehere shows the screws and that could be a lifesaver to that idiot ME who dissassembled this tv 1.5years ago and have nnnooo ffff .. clue which screws should go there 😆🤦‍♀️

    Apart from that thank

    You your time and effort to make this tutorial

    Kind regards

    J.

    John Stanley -

Conclusion

To reassemble the device, follow these instructions in reverse order.

Author

Maarten N.

Member since: 27/04/20

541 Reputation

5 comments

Hey I have a similar issue with mines. One of the backlights suddenly stopped working then the right side of my tv started overheating causing pixels to be burnt. Can you tell me what replacement parts i need? Cause it's not showing up

Twin -

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Jerome Magnaye -

Thank you worked on 49UK6400 bought the LED strips from chinese site and all worked perfectly.

Alex Fenu -

my screen becomes very blue , is this the back lights that have failed?

karl edwards -

Very good explanation but I don't think I am brave enough to do it. Thanks 👌

Nelly Broughton -