Would it be possible to fix that issue (reduce the strength of the bluelight) with screen software like "redshift" or "f-lux" maybe? They adjust the strong blue light at least if they would still work with this workaround.

What about the brightness can you adjust the brightness o no

@@mikeyan7312 full brightness all the time, but it can still shut the screen off for sleep and hibernate

@@dstorm19 ok thanks

Seamus Gorman what laptop? No laptop here matches that description.. what's your name again?

muzicmax G Hi, Did you find the problem with your screen? I have almost the same problem except the screen is grey, but it displays pic over HDMI.

No I didn't find the root problem..I don't have the equipment to be checking the pins(connections) on MB side..I tried a new screen and a new cable but that resulted in the same conclusion from where I started. After hours of searching on You Tube and having asked everywhere and someone told me it was the back light on the screen. It can't be that; as it does the same thing happened on a BRAND NEW SCREEN and this model does not have a separate back light control module on the case. I gave up unfortunately and he uses it with a HDMI led external screen. In your case however it does sound like it is a screen problem and you should try replacing it. I bought mine off eBay (cheap) and ended up returning it. Good Luck!

What is there to check on the motherboard side? If he has present 19v and 3.3v on the pcb of the screen, then surely there is 19v and 3.3v on the MB side. Can you tell me what is the screen model? It is at the back of the screen, on the sticker with the qr code or something. Or full laptop model name. It has to be the backlight itself or an inverter but since you replaced the screen with the new one and said there is no "backlight control module" on the screen, the inverter pcb has to be somewhere hidden or something. Sometimes it is separate from the screen and those kind of screens are selled without the inverter as I'm aware and you have 2 connectors on the screen. One for the ribbon cable for the screen and one for the inverter pcb. If that inverter pcb is broken, no screen will work. Backlight is just LED diodes.. You need to find and inverter pcb and fix it or replace it. May be just the loose connection. And to check the voltages you only need multimeter which is like 5 bucks for the cheapest ones which are good for your need.. My advice is to get the multimeter first and check for the 19v on the motherboard and on the screen. If it's pressent then it must be the separate inverter pcb somewhere. Also there is the possibility that the screen you bought was also faulty.

I faced the same issue, were you able to fix it?

@@HMubaireekUnfortunately no, apparently some chip on motherboard is gone and has to be replaced 😔

I think so. i have 2 lenovo laptops all have the same problem on the screen. replacing the flex cable and new lcd didn't solve the problem. and I think the problem lies on the motherboard side. now i don't trust lenovo anymore.

Did u try cleaning the fan,heatsink and adding new thermal paste

thats no problem,motherboard already taken out of my laptop and i try find problem,so when i switch on my motherboard without cooling system i see processor and graphic card start too hot to fast ,but i dont understand why.

without cooling system, GPU/CPU gets hot within few seconds... it is normal.

is never the cable, actually is a super io fault

Hello iam arabic job France your vidéo I inderstend to dix non laptop tanks for your explications and pléase how I do to get shema for télévision thomson in internet please help me give my adresse my émail yazidmerimech@sfr.fr tanks men

Merci

Jermaine Ortiz inverter circuit is for back Ac from Dc Regulator for dc

Maybe there was problem on the connector on the motherboard I guess one of the pin of lcd connector on motherboard might be damaged hence not able to supply current on that particular point therefore providing the supply by bridging