Turns on normally but if I touch the screen or move the laptop after a minute the back light goes off. If I reboot it the lamp working again even if I'm touching the screen, after a minute same thing. What can be wrong? Please HELP!!! 
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Re: HP DV6 Weird backlight problem
Bad or loose inverter/LVDS cable.A working TV? How boring!Originally posted by PeteS in CA -
Re: HP DV6 Weird backlight problem
Already checked the cables seems to be ok. All I can think is cold joint on CCFL lamp. Is this possible?Comment
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Re: HP DV6 Weird backlight problem
Yes. Broken wires at CCFL lamp base happen even in desktop monitors, let alone laptops which are moved around way more often.A working TV? How boring!Originally posted by PeteS in CAComment
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Re: HP DV6 Weird backlight problem
Indeed the wire was broken, re-soldered it and everything works fine now. Thanks a lot.Comment
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I`ve bought two T470, both of them has a backlight keyboard, and in one of them (lets name it computer A) it doesn`t work.
There is no "welcome light up" and no reaction to Fn+Space combination. My first suspect was the keyboard itself, so after checking the connectors, cleaning them na ribbons which didn`t help, i`ve swapped the keyboard as i have second computer (lets name it B)
From now, things are getting weird.
Both of keyboards started to work as it should. Welcome light up, switching on and off, changing brightness etc.
Computer B with keyboard... -
Hi. I have a problem with Asus ROG GA402RK. The keyboard suddenly stopped working along with the kb backlight. I replaced the keyboard and the ITE KBC chip and the problem is still the same. I don't see any passive elements that look damaged. Does anyone have an idea?04-28-2025, 04:30 PM
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hello everyone!
As the title states i am an owner of an LG flatron M2362DP 23 inch monitor Tv. Since i currently use it as a tv i'm posting the problem on the "troubleshooting tvs and video sources" section.
I'm from Greece so English isn't my native language, so please forgive me for any mistakes i make. I have basic knowledge in electronics, and although i have a degree, many things have changed since i finished a 2 year coarse (over 30 years ago). Occasionally i repair easy stuff, mostly things that break at home like appliances.
So i decided to try to... -
hello I have a backlight problem on this TV, if I unplug the cn201 cable the backlight works perfectly and the voltages are 13v if I connect the cn201 cable the backlight goes off and the voltage drops to 12v, I assume it's a motherboard problem, the question is has anyone had a similar problem? I want to understand if the motherboard is repairable or it's not worth wasting time... -
Hello,
I have this All-in-one PC, after SSD change there is no picture. I was found out it is a backlight problem, but LEDs are OK. There is 4 led strings each working on 42,4V, but from board is comming only 5V.
I was repaired many backlights before but this design i will not understand.
For me it looks like it is waiting for some signal from screen to start up the backlight or something like this. Nothing seems to be damaged or shorted here.
Can someone explain me please what to do, what to check?
Thanks....
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