It's pretty funny actually cause i watched some board repair videos and they say the backlight fuse is the component that never blows, Louis Rossmann has a video where the lcd connector has 2 pins completely destroyed and the backlight fuse is intact. Nice content, these sequence of videos gave me some basic understanding of how to diagnose these boards myself, thank you very much!

I learned so much on this one. Thank you. ...also if you're watching this video and have a hard time paying attention, I recommend taking notes on a word document, and take advantage of the pause and rewind buttons.

How clear and just up to the point and brilliant. Thank you so much. 😊 👍

Thanks for your video its my first time watching easy to follow and informative, thanks again.

Nice explanation on back light circuit.very useful for beginners.step by step procedure.thanks for video

The best tutorial for beginners. Thank you.

Thank you very much, it is clearly explained

Excellent explanation and lesson

great and easy to follow regarding fixed such fault . nice vids btw...new subs here

U r amazing dude i am learning very much knowledge from your videos...... Thanks very much again and.... Keep that going on

Great Video THANK YOU

Hi Again a clear explanation of the problem. Louis as you know uses Diode Mode for short to ground detection. It would be nice to hear your views on the technique. Kind regards Harold

If I am not mistaken, that was a schotky diode in the boost circuit, not a zener.

Very nice, appreciate the class!

Love the intro music!

Hey, I like the music! nice instructional video. reminds me when i went through radar repair tech training going through schematics (however it was analog..old systems).

great tutorial

Hi. Really enjoying your videos. I have some lcds from old laptops and i think one of them might have been shorter to ground as you said here and blown the backlight circuit on 3 boards on which I wanted to test if it works. Might that be just the fuse blown or maybe something more.

I love what you did here and I believe I have a similar problem with an HP 15-f009ca but I'm having trouble locating schematics. I saw the watermark on the one used in this video and tried it to no avail. Are there other resources you're suggest trying?

Big thank for videos

and thank you very much from us too i just want to say u r amazing.

I just fixed my backlight! a BIG: thank you ! :D I was looking for a power on but no picture on your channel could not find this job :(

Hi Thanks for big work...

thank you master....

Yes! I fixed it!

Great video could u perhaps show me where i can locate the backlight fuses for an hp 15u g3 zbook motherboard

Hi Sir, and many many thanks for sharing all this. if possible please I need an information. I blown a backlight fuse on a ThinkPad T460S replacing the screen and not removing the batt ... As a emergency repair I just short the blown fuse but I want replace it. now I know that is next to impossible to find a identical fuse , but can I use a generic 3A SMD fuse instead? (I`m not in repairing computers but I work in automotive electronics) many many thanks again and all the best

Excelent video!! I will receive my MBP i7 2012 with "failing backlight" (they said). And I'm starting to buy equipment (flux, tweezers, multimeeter etc.) but i am stuck in choosing the desoldering machine. Can you please tell me if i could use a soldering "gun" (more like a stick) a heat gun (which temperature i will use?) or a rework station(with a mini heat gun)? Thank you,

Hello thanks for your helpful tips... Do you have any suggestions for troubleshooting a surface pro 4 motherboard or equivalent? Any help would be appreciated

One thing I found so amazing watching your videos is the way you read schematics. What type of software or website are you using Mr Adam. Am new in the tech field and I wish to excell by learning from people like you. Thanks in advance

its really helpful . can you fix window air conditioner pcb too ????

Hi, I wonder where do you get the apple schematic? Do you have to buy it or download it from somewhere?

What software you are using for datasheet?

Unfortunately the problem here was quite simple....but i really wish if you could throw more light on backlight enable circuit....like all the necessary enable signals for the chip to work properly....for instance if there was a backlight fault and suppose the driver chip was guilty how to be sure of the chip to be faulty was the real challenge.... please make a video on this subject... anyways still i must say that your videos are very systematically explained...with very sensible diagnosis..... please keep up the good work. Really appreciate your work.

This is a brilliant tutorial, thanks. I have a MBP Mid 2012, which has no backlight (but works with an external monitor). However I followed your steps and found out: 1) no shortage from the main LCD power rail(s) to ground; 2) I have 12.6v at pin4 and 12.2v at pin3 of Q9806. But both LCD_BKLT_EN and BKLT_PLT_RST_L are 0v and PPBUS_SW_LCDBKLT_PWR is not present. What would be my next move in searching faulties for this no-bklt problem? Thanks!

Hi! thanks for the video, i have a MacBook 2008 with a backlight issue, i had backlight fuses of MacBook 2011 in stock, they are F9700 and i replaced the backlight fuse with those F9700 and it didn't work, so i searched and saw it is actually F9800 and it is another fuse. my question is does that really make a difference using an F9700 instead of an F9800 on my 2008 Macbook pro? thanks!

Great video, easy to understand. Is it possible that i could visite you for some course for deep understanding ?

❤❤❤

Excellent Video tutorial , hail thy praist

well - my cpu fan header in pc motherboard - the fan burn and the header stops - with ur great video - im gona try to short the fuse for a sec to see if the fan will work - and what your advice if the fan spin and work - is any thing will go wrong to short the fuse - not replacing it - coz i cant find it .

Quick question: Are all grounds connected on a PCB? Is that's why it has connectivity at 3:00? Let's say you pick a different screwhole and the groundpin, will it also beep? Amazing videos btw! Really enjoy your approach to this! Thanks

How did you know to search for F9800?

I'd have checked that coil for a short before putting the fuse in. I also would have let the thing run overnight at max brightness in a warm environment before calling it good.

Thank you for sharing. I have a Lenovo L340-17API laptop with g542 fg543 fg742 nm-c101 Motherboard. The motherboard is different from this one. I am looking for the fuse for the backlight display. Would you be able to help? Do you have a schematic for that board? I made the mistake forgetting to disco the power while reseating the display.

Hello there !! where is video number #9? You are a great teacher by the way !!!

Can you help me find the backlight fuse? It's of Sony Viao PCG-61441L. Any help would be appreciated and i also have pictures of it. If somehow i can contact u and get some help. Thanks anyways.

Everything STICKS TO MY TWEEZERS!! I guess I have to get one of those demagnetizers..? But it seems like they're sticking to the flux maybe, also? It's SO tedious getting stuff to the right place while you're blasting it w hot air.

Pls is feed back the input voltage to the ic if yes when there is continuity on the pin what will I do cause the short is not from the ic since the ic receives feedback as an input

15:01... On my board, In the backlight enable circuit I have no voltage on "LCD_BKLT_EN "... ..what to do and how to diagnose it further?... Additional note: Q8906 (P-type transistor ) I have voltage on pin 4 and 3 ( voltage less than pin 4), but I don't have any voltage across the transistor on pin 1, 2, 5, and 6.....Please help...How to get the enable signal?...Please help

My laptop has backlight flicker issue. It mostly occurs in battery powered mode and not so much when plugged in. Can you help if possible by pointing out which circuit on the backlight driver on LCD screen is the cause of this. This occurs also in the BIOS screen mode also so I believe it is backlight issue not a software driver issue. Please provide your input

Thanks, my backligth fuses didn't blown which tested it with my multimeter, plz help me on it

Please tell me the websites where you get the board schematics. And Is it free or paid per schematics?

Hi sir what board viewer are you using?

amateur question, my laptop from is 2014, probably CFL backlight, when you turn off backlight (keyboard key) off and on, its 100% area and luminosity for 2s then 10% of area goes to about x0,3 luminosity (made up number) and the rest sill normal, it stayed like that for months, and now its 40% of area shadowed to 0,3 lum, still the same 2 seconds of 100%normal if you turn backlight off and on at any time, my multimeter is in another state and i cant get it for months... is this behavior indicative of a good chance of being through-hole capacitor problems or something else that i could easily see and repair with just an amateur iron? or is it a waste of time disasembling without a multimeter?

Can you please let me know where you find this fuse? Is it a littelfuse 3A/32v? I'm in the process of trying to find a backlight fuse for my Lenovo Flex 14 7i. I've traced and found that FV1 is not continuous but the J7 EL [+] to the FV1 is. I'm thinking I just need to replace this little fuse and all will be right with the world

Hi, What application is your board viewer application? Is that paid or free ware?

Podrá apoyarme?, necesito saber dónde está el fusible de backlight de la hp mini 110-1020LA

What software are you using to search like that?

What software do you use for the boards?

Hi Adam I got Lenovo x390 thinkpad 14 inches . The backlight is gone . I am not able to locate the fuse or anything related to that . I forgot to disconnect the battery before removing the LCD.I am not sure what to do . I live in Canada and no one is able to help me . Can I share my mother board pics ? Thanks

Hello, where can I find these schematics?

How much cost this repair in your repair store ? @Adamant IT

Is a missing ego chip part of a circuit

0:30 Where can i download that program?

Thanks for the video. Can you recommend a website to download schematic for laptops. Thanks

If you listen closely at 8:08 you hear a fart . No offense tho cool video btw

I like to make sure the fuse doesn't blow again, so I replace them with a higher rated fuse. 😆

where do you get SMD/tiny packages like the pack of new fuses (don't know the formal names) from? Website or walk-in store?