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Laptop, LCD TV and Monitor Backlight Tester
By Jestine Yong on October 1, 2011
Found this tester in ebay and the tester can be used to test a backlight up to 1000mm. The price is quite reasonable. For more information you can visit the website and check from the seller. Please click on the photo to visit the ebay website.
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IMOH
October 13, 2011 at 4:29 am
My LCD back light is not on,the screen display fainting images, so i guess the back light is bad. Pls how can i fix this, (2) what voltage powers the LCD back light. thanks
admin
October 13, 2011 at 12:13 pm
HI Imoh,
Make sure there is supply voltage to inverter ic. No voltage the display will become faint. The ac voltage to the backlight is about 450vac to 1000vac depending on the model.
Jestine
IMOH
October 14, 2011 at 9:27 am
Thank sir for ur reply. Have tested it,12volt dc is supplied to d inverter circuit,fuse is ok stil screen is dark. You can only know dat the screen is displaying if u point a flash light touch on it. Pls sir what could b d problem n solution. Tanks
admin
October 15, 2011 at 2:32 am
HI Imoh,
If there is supply voltage to the inverter ic. Then you need to check if there is any output waveform or not. If do not have you need to replace the inverter ic.
Jestine
e-rool
October 20, 2011 at 1:45 am
salam...
boleh tak bgtau camne nk idupkan LED yg guna 3 bateri AA 1.5V m'gunakan bateri 12V? tlg bgtau caranya dgn details sbb klau kita sambung terus LED akan terbakar sbb arus yg tggi...terima kasih..
admin
October 21, 2011 at 2:17 am
HI,
Sambungkan 330ohm resistor secara siri dgn bekalan kuasa.
Jestine
dave
May 22, 2012 at 1:26 am
sir jestine hi
I have a problem in my computer power supply no switch, I check the puse, bridge diode it is working fine
and when i connect to the power
then i switch still not switching what is the sir? can I ask you help? thank you
dave
Jestine Yong
May 27, 2012 at 4:09 am
Hi Dave,
Have you check all the components i9n the primary side? What about secondary diodes and filter cap?
Jestine
Matt
June 1, 2012 at 3:55 am
Hi,
Do you know of anywhere in Singapore that sells 2mm diameter x 85mm backlight lamp for LCD montior. Have been trying to find a supplier but no one has that small a size. Monitor is 4inch by 4inch.
Any help be appreciated
Matt
Jestine Yong
June 1, 2012 at 8:05 am
Hi Matt,
Sorry no info on this. Try ICCFL.com
Jestine
Toni
June 4, 2012 at 9:38 am
Hi Jestine.
I’m looking for a ccfl tester and I see the same tester that you say above.
I have one question to solve before I order. How this tester can regulate the voltage/current at different lengths of lamps.
Toni
Jestine Yong
June 5, 2012 at 6:01 am
HI Tony,
For more information I suggest that you check with the seller. They should have the info of the tester spec.
Jestine
Andrew
February 18, 2019 at 6:19 pm
My Sony Bravia Led Tv -KDL60EX700 blinks 5 times. No picture & audio. Did try to restart.. goes green then after a few seconds back to standby red blinking 5 times.. Whay may be the problrm sir? tq
Jestine Yong
February 20, 2019 at 2:29 pm
Hi Andrew,
Possible the memory IC could have corrupted if all the dc supply voltage to the ICs are good.
Jestine
DOĞAN
September 4, 2019 at 8:00 pm
Merhaba. Türkiyeden selamlar olsun. Siteniz ve siz harikasınız.
ccfl lambalara giden ac voltajın frekansı 50 hz mi? teşekkürler.
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Hello there. Whether Greetings from Turkey. Your site and you are great.
Is the frequency of ac voltage to ccfl lamps 50 Hz? thanks.
Jestine Yong
September 5, 2019 at 8:01 am
Hi Dogan,
It is usually more than 50Khz.
Jestine