English Community

Lenovo NotebooksLenovo B and G Series Notebooks
All Forum Topics

2 Posts



3 Signins

24 Page Views

  • Posts: 2
  • Registered: ‎09-26-2017
  • Location: IT
  • Views: 24
  • Message 1 of 3

Lenovo g 50-70 lcd screen black - (no back light)

2017-09-26, 21:18 PM

Hi all,
This is my first post.
I tried to find my problem with my laptop but i did not find anything similar.

The story:
Several months ago the hinges of my laptop started to slacken. After this (warranty period expired) i opened the pc and repaired them with stronger screws. In the same time the lcd screen started to flicker. I had to move or press it to obtain the correct colours or light. So i decided to disassemble it and try to find the fault.
Unfortunalely during this operation tpouching the pcb (in the place were written "do not touch!) the screen bacame black. Using a light in the back i can see everything, so it meens that there is no more back light.
Using an external monitor the video is perfect.

My qyìuestion:
I am quite sure i have to replace the LCD that was defective (i knew i had to do but i attempted to fix it temporarily) but now i am afraid i broke something in the main PCB.
Do you think a simple replacement will resolve? Do i have to control something else than the screen?

I apologize for my english, but i hope i have been able to be understood.

Thanx all.


11737 Posts



7059 Signins

741044 Page Views

  • Posts: 11737
  • Registered: ‎11-30-2015
  • Location: PH
  • Views: 741044
  • Message 2 of 3

Re: Lenovo g 50-70 lcd screen black - (no back light)

2017-09-27, 5:03 AM

Hi cicciofotografo


Welcome to the Community Forums.


A simple LCD module should fix the problem not unless that the connector port on the systemboard is broken.

For such it would be best to have it checked with a service center since they usually have LCD tester or at least spare screen to check it with.


At some cases they may even try to have the backlight fixed even if it was tightly glued on the module.

Such may be cheaper than the entire set.


Take your time to review the best option for you at the moment, After all, the machine in itself is working with any good monitor.


Hope this helps answer your query.

Update us how it best goes with you.



Did someone help you today? Press the thumbs-up icon below to thank them.!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.

Using Browser Search to find your answers in Lenovo and Moto Community


1 Posts



3 Signins

10 Page Views

  • Posts: 1
  • Registered: ‎06-12-2020
  • Location: US
  • Views: 10
  • Message 3 of 3

Lenovo G 50-70 Decussate start

2020-06-12, 8:39 AM

Hi, everyone


It is not normal for my laptop to turn on. Sometimes when I press the power button, Windows comes up and everything is normal. But most of the time when I turn it on, nothing is displayed. I have to hold down the power button to turn it off and try to turn it on again. This may be repeated several times, and eventually Windows will boot up. After a while, my laptop doesn't go up at all.

The symptoms after turning on the laptop are as follows:

- The power light comes on

- The fan turns on and off immediately

In the same way, when I connect and disconnect the power plug, a beep sounds comes from the laptop.


I hope to solve this problem whit your helps.


Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop