Replacing LCD Flex Cable for Samsung Smartphones


This article explains step by step procedure to replace damaged Flex cable of Samsung E-840.

Replacement requirements for Samsung E-840 Flex cable


Damage of flex cable is the basic problem in slider mobile phones. Function of flex cable is to transfer the data and power for LCD screen, Camera etc. In every two every flex cable worn out due to sliding action between two plate. If you are facing some problem in all parts that are connected at the upper slider means some problem in flex cable. Here I have explained steps by steps procedure about the replacement of the flex cable in sliding mobile phones. Follow the instruction as given bellow.

Price of the Samsung SGH E-840 in the market is only 80 rupees, but mobile repair charge you around 450 rupees means 370 extra. Here you can save your money by this simple procedure.

Belt of Samsung E 840

Procedure to replace Flex cable of Samsung E-840


Step : 1
• Switch off your mobile phone by pressing left power for 2-3 seconds. After that remove back cover by giving some pressure in the opposite side.

• Remove sim card and battery and place them in to safe place, as given in below figure.

• As given in figure remove small elliptical cover with help of pin as marked with red circle.

• Remove all four screws at the upper side of the cover and one screw at the bottom of the cover with the help of screw driver.
Flex Cable of Samsung E 840
Step : 2
• With the small amount of hand pressure remove the cover from the slot after screws. Keep all removed screws at the safe place, because loss in any single screw create problem during assembly.

• Remove all three buttons like Power On/Off, Camera and volume at the right side of the phone.
Flex Cable of Samsung E 840
Step : 3
• Remover four screws at the bottom side of the Samsung sticker as shown in figure indicated by red circle.

• Apply pressure at the power cable as indicated by the red circle, which disengage the motherboard from the mobile phone.

• Find out the one end of the flex cable, which is connected with the motherboard remove it from the slot.
Flex Cable of Samsung E 840
Step : 4
• Move slider in upward direction as indicated by red arrow in the below figure.

• Remove four screws as shown in figure with the help of screw driver.

Flex Cable of Samsung E 840

Step : 5
• As indicated in red rectangle remove the second side of the flex cable from the slot, after removing old cable insert new flex cable.

• Finally follow all the steps in reverse and complete the assembly.

Flex Cable of Samsung E 840


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