Replacing the ccfl tube into an LED backlight( CF-30 LCD)
Posted: Tue Dec 10, 2013 9:11 pm
I've got a chance to replaced the ccfl tube of another cf-30MK2 Toughbook into two LED backlight strips and its amazing. It has a vibrant color, no yellowish or redish color no more. This Toughbook has a flickering redish backlight whrn I got it.
First: you need an shematic for lcd specifically the inverter side to identify the VCC, Ground, BLPWM and the ON/off line.
Second: assuming that you already pull out the lcd panel from the bezel. Now! unscrew the two screw at both side where the metal guide located, then followed by four screw total on the metal frame. They are all hidden as they are all cover by plastic with rubber bumper. then carefully detach the metal frame on the lcd.
Third: unscrew two screw where the buttom metal support on the CCFl tube and then pull it out backward. Then followed by taking out the ccfl metal case. always be patient on doing it. This ccfl metal case with the tube is no longer needed(garbage)
Fourth; Now! Install the two LED strips into the metal support case facing upward. These strips has already an adhesive, If not, you can use 3M led strips double sided tape.
Fifth; Before assembling the lcd with new led backlight, make sure to add addition deflector at the back( prefer black or metal plate also) line up to the front plastic frame. This is a must so that not to create a shadow when the LCD is on at the button part.
teo
See a few photo below for your reference.
First: you need an shematic for lcd specifically the inverter side to identify the VCC, Ground, BLPWM and the ON/off line.
Second: assuming that you already pull out the lcd panel from the bezel. Now! unscrew the two screw at both side where the metal guide located, then followed by four screw total on the metal frame. They are all hidden as they are all cover by plastic with rubber bumper. then carefully detach the metal frame on the lcd.
Third: unscrew two screw where the buttom metal support on the CCFl tube and then pull it out backward. Then followed by taking out the ccfl metal case. always be patient on doing it. This ccfl metal case with the tube is no longer needed(garbage)
Fourth; Now! Install the two LED strips into the metal support case facing upward. These strips has already an adhesive, If not, you can use 3M led strips double sided tape.
Fifth; Before assembling the lcd with new led backlight, make sure to add addition deflector at the back( prefer black or metal plate also) line up to the front plastic frame. This is a must so that not to create a shadow when the LCD is on at the button part.
teo
See a few photo below for your reference.