The Most Common Fault When There Is No Backlight, Gateway New95, No Backlight repair 

I had my own repair shop .But I was getting stuck.By dead iPhones or Samsung or laptopsso I was searching on you tube for helpNo luck. Not a learning one.So I am closing the repair shop for now.I just replace parts and was so many thimes frustrated about the parts I can not repair.Then I found you.Now I am ferry motivated to learn from youSo I did shop for the tools I need for repair ic and solder charging ports and moreI want to save more devices and I didThank you ferry much. Nice regards Rene from the Nederlands

I just finished downloading all your videos from day 1. and always watching out for more to come to download .....and am so happy because I've learnt a lot from my best teacher in d world ......your so realistic thanks ...lots of love

You are simply great, thank you for sharing your experience. Greetings from Spain

you are very intelligent and I thank you very much for all the information you give us.

Feel better soon. Thanks for the video.

Hi, hope you get well soon... thanks for this video i'm learning a lot.

Very good ...You are super repairman...I trying to watch your all videos at Turkey and wait your new videos...Thank you my Teacher...

Thank you for sharing your knowledge

Nice video Very informative and it will Save me lots of time in the future. Thumbs up!!

Nice job, thank you.

U r a great motivator for electronic enthusiastic people.

think you Mr, you are the best & nice work, you help me a many time

Great videos. I love watching them. Do you have any videos on repairing desktop motherboards?

One word to describe your work is amazing

Ahhh the sweet sound when we have to say "That's wierd..." :) Good Job ;)

thank You, got almost similar problem but there was no LED EN signal, got shorted works fine!

Multă sănătate !

I love you men. Thanks for the knowledge you share. Godbless more.

THANK YOU SIR!

Another Great Job!!!!

I like all the videos your post

that's great, thank you ...

Amazing channel! hmmm what about VLED not registering power? Have been following a few of these backlight videos and yet to find my problem. (Will keep looking).

Thanks Master!!!

Thank you for the nice tutorial chief. Its an awesome easy fix, right? There is one thing still I don't understand, how you guess the problems...? When I a saw your video for the first time i was like "he is houdini..." and now like " no.. no.. he is holmes.." 8:18 "who needs schematics, come on...." 😆😆 12:25 The Smile... 😍 13:02 wtf..? how did you just read my mind..? 🤯 Good job chief and get well soon.. God bless you..

شكرا لك

nice working magic bridge

Magic again!!

You have to rest a lot, I hope you get well soon.

nice video. but when you short this screen 3.3v can't harm another componant ? and why it's not getting 3.3v , could be another problem ?

wondering....could you drop in a resistor to put the screen at say 80% brightness? if so what value would you use? thanks for your videos

you are the best

Excellent Magic. How did you come to know about test points and voltages supposed to be? Its really amazing

Amazing how you can trouble shoot laptops even without schematics! Most people would get completely lost looking at the board behind the LCD. I know I don't have a clue - luckily it turned out to be a broken flex cable.

Hi Sir, I have an issue with Dell Latitude 7450 which is no powering on. Hard drive & power light is blinking any idea about this.

Hello Sorin, I am trying to debug the similar issue on one of my laptops, interestingly the screen also looks similar to the one in this video... in my case the situation is reverse, BL_EN is zero, while PWMBL1 is 3.2 volts 😇. I tried shorting them and also tried bridging 3.2 volts from another vcc* test point but it still doesnt light up. I connected another lcd as well and found the same result, no backlight but picture is there .... I am thinking of changing the display cable ... any thoughts?

Hi. How can I contact you for advice. Great videos by the way. Loving them.

:) useful thing there master

nice nice thank

If you can not beat it, bridge it. :) Nice video.

I assume I could add a diode instead of short between the pwr and brightness to drop the 3.3v slightly for less than max brightness. Is that correct?

Sorin, did you check with a known good working screen to test? In my experience some backlight issues are due to the screen board and not laptop motherboard. I recently have had 2 such laptop screens that the backlight has failed, but with a new screen those laptops worked fine. Both cases I ended up buying the laptops from the customer as they didn't want to spend to have a new screen put in or the old ones repaired. In another case I replaced the screen without removing the battery which resulted in me frying a resistor next to LVDS cable (Compaq) and no backlight. So the problem in this video and my 2 laptops seems to be the resistors on the screen board next to test points have failed?

as always master technician move,,,,,,,

nice.

What solution did you do there I didn't understand! You just joined those with a glue ??? Plz help

Hope you get rid of that cold quickly, i hate colds. Naughty boy, short the pwm/bright to 3.3v lol :-D

Do you can a video with broken pads bga chipset motherboard

Peace be upon you السلام عليكم I learned a lot from you I pray to God to guide your heart to the truth

i have a laptop where only left side is light.half side of screen withoztr light.what can there the problem?

Get Well Soon. I like ur short cut jobs....u always do in a very easy way....bye

man i love you

Sir, I brought a linear power supply MAISHENG MS-305D, but i see/notice you increase the current while charging a battary, but for my DC power Supply, i cannot increase current when charging the battery (is there some i can do to increase current?). THANK YOU

Hi Can You please help me to fix the " nt156whm-n42 v8.0 display backlight "

you can add a variable adjustable resistor so that you can adjust brightness as you wish....more work but not that hard.

If the 19 volts was missing u would not have a image on the screen. The 19 v powers a circuit that drives the LCD panel drivers. SO its the boost converter IC that drives the LEDs.

the start up chip controls the brightness for the screen? and fixing it to get back control .is to change the start up chip ?

super......

nice job sir. but not work to me..

Help. I have an HP 11x360 that only powers up (and runs fine) with the internal battery disconnected and AC power connected. I get a "no battery detected" message when I reconnect battery while it is running. Tried all the hard restarts and uninstalling acpi battery software with no luck. The battery is a 2 cell 7.2 volt li-ion with only .25 volts of power left. The battery socket on motherboard has three pins with 3.2 volts. I am thinking the battery charging circuit is bad. Thoughts? Thank you.

Electronic Repair School Online Discord server: discord.gg/6zQWaTN (just click on the link and download Discord for ios, android, windows or mac)

Hi I have a Toshiba laptop that has power light but not booting up can you advice something

I hate the fact that I saw this video now and not a year ago. I already crapped a lot of screen because of the BL dead.

Смотрю твои видео и думаю, русский.? Выздоравливай ;-)

No video for Friday. Hmmmm waiting

One time i destroyed a laptop motherboard by just unplugging the screen and the 19 volts shorted the board and cable out.

I wish Hindus come here and learn to teach in English. Imagine if Mr sorin was teaching in Romanian!

nice video. but when you short this screen 3.3v can't harm another componant ? and why it's not getting 3.3v , could be another problem ?

nice video. but when you short this screen 3.3v can't harm another componant ? and why it's not getting 3.3v , could be another problem ?