Badcaps.net Forum
Go Back   Badcaps Forums > Troubleshooting Hardware & Devices and Electronics Theory > Troubleshooting Computer Displays
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 08-17-2018, 05:15 AM   #1
ahmedsamir
New Member
 
Join Date: Jul 2018
City & State: Cairo
My Country: Egypt
I'm a: Knowledge Seeker
Posts: 8
Default Laptop ccfl lamb vs monitor ccfl lamb

As I am a beginner, I have a question.
Comparing laptop ccfl lamb with one pair of wires (red-white) , with pc monitor's ccfl which have two pairs (red-white) , (black-white) wires.
Could I use the laptop ccfl lamb with one pair of wires instead of the monitor lamb which have two pairs.
I'm using the laptop lamb only to prevent the protection circuit form Kick in.
Is the LCD monitor two ccfl pairs are for two lambs ? Or it has two pins for each side, not like the laptop ccfl that has one pin for each side resulting in just two wires not four?

Last edited by ahmedsamir; 08-17-2018 at 05:22 AM.. Reason: More details
ahmedsamir is offline   Reply With Quote
Old 08-17-2018, 05:17 AM   #2
vinceroger69
Badcaps Veteran
 
Join Date: Mar 2012
City & State: Nuneaton Warwickshire
My Country: uk
I'm a: Hobbyist Tech
Posts: 5,791
Default Re: Laptop ccfl lamb vs monitor ccfl lamb

yes that should work fine
vinceroger69 is offline   Reply With Quote
Old 08-17-2018, 10:30 AM   #3
ahmedsamir
New Member
 
Join Date: Jul 2018
City & State: Cairo
My Country: Egypt
I'm a: Knowledge Seeker
Posts: 8
Default Re: Laptop ccfl lamb vs monitor ccfl lamb

Thanks for quick reply,
So what is the difference between them , laptop lamb and monitor lamb?
Why the first has just one pair of wires while the latter has two?
What is the role of each pair of the monitor’s ccfl, if the laptop ccfl works fine with just one pair of wires red-white ?

Last edited by ahmedsamir; 08-17-2018 at 10:32 AM..
ahmedsamir is offline   Reply With Quote
Old 08-17-2018, 11:21 AM   #4
ahmedsamir
New Member
 
Join Date: Jul 2018
City & State: Cairo
My Country: Egypt
I'm a: Knowledge Seeker
Posts: 8
Default Re: Laptop ccfl lamb vs monitor ccfl lamb

Quote:
Originally Posted by vinceroger69 View Post
yes that should work fine
Thanks for quick reply,
Could I use the laptop 15.6 lamb on the 22inch monitor without a risk.
If YES , could I use the monitor if that situation works, for operation mode not just for testing?
Many thanks in advance.
ahmedsamir is offline   Reply With Quote
Old 08-17-2018, 12:58 PM   #5
stj
Great Sage 齊天大聖
 
stj's Avatar
 
Join Date: Dec 2009
City & State: Europe
My Country: some shithole run by Israeli agents
I'm a: Professional Tech
Posts: 21,226
Default Re: Laptop ccfl lamb vs monitor ccfl lamb

it will be overdriven and not last long.

get an led kit instead.
stj is offline   Reply With Quote
Old 08-21-2018, 12:56 PM   #6
momaka
Badcaps Veteran
 
momaka's Avatar
 
Join Date: May 2008
City & State: VA (NoVA)
My Country: U.S.A.
Line Voltage: 120 VAC, 60 Hz
I'm a: Hobbyist Tech
Posts: 9,027
Default Re: Laptop ccfl lamb vs monitor ccfl lamb

Quote:
Originally Posted by ahmedsamir View Post
So what is the difference between them , laptop lamb and monitor lamb?
Most 19-24" LCD monitors have 4 lamps: two at the top and two at the bottom - hence 4 sets of wires.

Meanwhile, laptops usually have only one lamp, and hence only one pair of wires. The color of the wires don't matter. Only that in each set of wires, one is thick and the other is thin. The thick one is the High-Voltage (HV) one and the thin one is usually just return - i.e. close to ground voltage (but not exactly, as it's used for current detection going through the lamps.

Quote:
Originally Posted by ahmedsamir View Post
Could I use the laptop 15.6 lamb on the 22inch monitor without a risk.
For testing only - yes, maybe.
As a long term repair - no. (Lamp will be over-driven as stj mentioned and so it would not last long.)

Last edited by momaka; 08-21-2018 at 12:59 PM..
momaka is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Badcaps.net Technical Forums 2003 - 2019
Powered by vBulletin ®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 02:19 PM.
Did you find this forum helpful?