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How to replace laptop backlight
amp (CCFL)
Dec
9
this guide I will disassemble a laptop LCD screen in order to remove and
place the backlight lamp (CCFL).
eplac ing the backl ight lamp is not an easy task even for
pe r ie nced technic ians . I f you do something wrong you wil l
rm anen tly damage the LCD screen an d have to buy a new on e.
oceed on your own risk and do not b lame me .
me recomm endat ions before you start :
Work in a clean room. You dont want dust and lint inside your LCD
reen.
Make notes, so you know how to assemble your screen back.
Take pictures.Before you remove something, take a closer look at the part and
emorize how it is assembled.
When you are assembling the screen, remove dust and lint with
mpressed air. Do not use cloth.
he backlight lamp (CCFL) is located inside the LCD screen, so we are
ing to take it apart. In this article Im not going to explain how to
move LCD from a laptop, its been covered before.
ere some examples:
moving LCD screen from a Dell laptop.
king apart IBM ThinkPad display panel.moving screen from Toshiba laptops.
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move sticky tape and foil from the back of the screen and glue it
mewhere so you can reuse it later, when you assemble the screen.
moving tape from the backlight cables.
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n my screen the green circuit board was glued to the plastic frame with a
uble sided tape. Carefully unglue the circuit board. Be very careful, do
t flex or bend the circuit board.
he circuit board has been unglued.
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ace the LCD screen on the side and start removing the metal frame witch
cures the LCD to the plastic frame. There will be many latches on all
des of the frame, you can unlock them with a small screwdriver.
ntinue separating the metal frame from the plastic base.
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n the following picture you can see that frame, LCD with the circuit
ard and screen base have been separated. Be careful, do not touch
ternal components with your fingers. Handle all internal components by
e sides.
ace the metal frame and LCD with the circuit board aside. Youll need
em only when you assemble everything back together.
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here will be a few transparent layers inside. Carefully remove them from
e screen base. Do not separate the layers, just put them aside together.
ep everything organized, so you have no trouble assembling the screen.
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art removing the metal cover from the backlight lamp (CCFL).
he backlight cover has been removed.
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he backlight lamp (CCFL) cables are routed through small plastic hooks.
nroute the backlight lamp cables.
ow probably the hardest part in this disassembly process - removing the
cklight lamp and reflector. The backlight lamp is secured inside the
flector so you have to remove both and then separate them.
fore you remove the backlight lamp and reflector take a closer look hows assembled and mounted to the screen base. Fitting the backlight and
flector back in place could be a very challenging task.
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e reflector is glued to the screen base with a double sided tape.
ter the reflector has been unattached from the screen base, you can start
moving the backlight lamp. As you see on the picture, I marked the left
de of the reflector with a red dot so I know where the red cable goes when
ssemble everything back together.
he backlight lamp (CCFL) has been removed from the reflector.
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order to access the backlight lamp leads youll have to remove thebber caps from both side of the lamp. Im not sure if you can touch the
cklight lamp with your fingers, so I would use rubber gloves.
bled on both sides of the backlight lamp are soldered to the backlightads. In order to access the leads youll have to remove the black insulator
both side of the lamp.
nsolder both cables from the old backlight lamp and solder them to a new
e.
u can test the new backlight lamp (CCFL) before you install it back into
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Posted by cj2600 Subscribe to RSS feed
0 Responses to How to replace laptop backlight lamp
CCFL)
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e screen. Connect the backlight lamp into the inverter board and turn on
e laptop. The backlight lamp should light up.
om my experience, on some laptops the backlight lamp will not light up
til the video cable is connected to the LCD screen. In this case youll have
assemble the LCD screen and then test it.
u can search for a new CCFL backlight lamp here.
30
sidu Says:
uly 16th, 2009 at 12:44 am
Hi,
Thanksforposting the tutorial.
I have just changed the CCFL of an IBMThink Pad R50e for adark screen as outlined in the tutorial. When I re fixed the LCD
Displayfound that only about 2in of the screen at the base is
lighted. The upper part of the screen is still dark. I can see the
window screen there but unable to use the screen.
What could have gone wrong in my case?
29
ean Says:
uly 12th, 2009 at 5:21 pm
Hey folks,
http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-11/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-10/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-7/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-6/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-5/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-4/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-3/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-1/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-12/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/all-comments/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-13/#comment-116780http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-13/#comment-116426http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-13/#comment-116426http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-13/#comment-116780http://rover.ebay.com/rover/1/711-53200-19255-0/1?type=4&campid=5335921923&toolid=10001&customid=replace+laptop+backlight&mpre=http%3A%2F%2Fsearch.ebay.com%2Fsearch%2Fsearch.dll%3Fsofocus%3Dbs%26sbrftog%3D1%26dfsp%3D32%26catref%3DC6%26from%3DR40%26satitle%3Dlaptop%2BCCFL%26sacat%3D-1%2526catref%253DC6%26sargn%3D-1%2526saslc%253D2%26sadis%3D200%26fpos%3D98036%26sabfmts%3D1%26saobfmts%3Dinsif%26ftrt%3D1%26ftrv%3D1%26saprclo%3D%26saprchi%3D%26fsop%3D32%2526fsoo%253D2http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/all-comments/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-12/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-1/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-3/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-4/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-5/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-6/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-7/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-8/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-9/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-10/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-11/#commentshttp://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-12/#commentshttp://www.laptoprepair101.com/feed/ -
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My e1705 died last Sunday - was happily watching a video,
then there was a fizzle, and then a black backlit screen. I took
the whole thing apart, messed with it, gave up and put it back
together - then it started working, for whatever reason.
Today (1 week later) it did the same thing again - black screen.
I took it apart as the first few instructions show to ensure it
wasn t a loose cable causing the problm, and theres definitely a
glow from the backlight when turned on or fn-f8ed, but no
picture again. Hooking it up to an external monitor allows it to
work fine, so its not the graphics card (although it was
throwing me all sorts of errors until I reinstalled my drivers).
Could anybody confirm that this is an inverter problem? If not,
I might just ditch this terrible laptop model and go find
something new
28
redSays:
uly 5th, 2009 at 4:38 am
Hi Larry,
Thanks for posting the procedure.
I did this to a Gateway laptop with a 15.25 Samsung
screen. As you previously stated:Replacing the backlight lamp
is not an easy task even for experienced technicians is
absolutely true.
This is a very sophisticated repair procedure.
Anyway, the Gateway is back up and running like new.
I chickened out and didnt un-glue the circuit board as you did
but then found it to be that much harder to get the lamp
reassembled and reseated but I guess luck was with me that
day.It can be done however, patience, patience, patience!.
I would recommend people buy (2) CCFL tubes when
ordering, youll only have to pay shipping once.
I had to pay for it twice because I clumsily broke one just after
I had soldered it (bummed!)
Thank you again!
Fred
27
evin Says:une 9th, 2009 at 6:16 am
Hi thanks for ll the great help. I have a packard easy note
laptop and screen has gone dark but it still can be seen to be
working in correct light. Im going to go about replacing the
backlight now. I just want to know if i can use any correct size
backlight or are they specific to each model of laptop. In short
will any backlight work in any laptop
26
UTAHSays:
une 9th, 2009 at 4:40 am
http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-13/#comment-115944http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-13/#comment-112314http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-13/#comment-112303http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-13/#comment-112314http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/comment-page-13/#comment-115944 -
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eave a Reply
Just tested the magnetic switch with a magnet - it goes into
hibernation fine but still restarts with dark screen, so if its not
the switch, inverter or backlight is my board screwed?
25
DerrickSays:
une 8th, 2009 at 5:14 pm
This procedure requires extra care. The backlight lamp of most
LCDs (I think) contain mercury, which is toxic.
24
UTAHSays:
une 7th, 2009 at 3:19 pm
Hi I have tried setting power to never turn off etc but cannot
seem to find anything that will allow me to disable the lid close
switch. could you advisethanks
23UTAHSays:
une 7th, 2009 at 11:52 am
Thanks.. I have replaced the inverter in the screen. i know it
works as it has been tested, the same with the backlighti have
two sp10-304 laptops with exactly the same problem
inverters work as do backlights image is getting onto screen
but really dark its doing my head in.
22
j2600 Says:une 7th, 2009 at 9:07 am
Sam,
Can someone tell me whats wrong with my computer. My
processor works but there is no picture on the lcd.
First of all, you have to test your laptop with an external
monitor. Do you have picture on the external monitor?
21
am Says:
une 6th, 2009 at 9:37 am
Hello,
Can someone tell me whats wrong with my computer. My
processor works but there is no picture on the lcd.
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