Technical Support Lenovo G50-45 Black screen

[biling]

Hi, I have a Lenovo G50-45
Power on, slight colour change on screen then back to black
External screen works. Machine boots, fan works etc
Replaced screen with new same error, slight change shade of black then black
Replaced VGA cable exactly same symptom
Replaced with a third screen same symptom

I have never come across this before (usually solved by changing cable or screen)
Any thoughts please
Thanks

 

[Hosein Asadolahi]

Hi, I have a Lenovo G50-45
Power on, slight colour change on screen then back to black
External screen works. Machine boots, fan works etc
Replaced screen with new same error, slight change shade of black then black
Replaced VGA cable exactly same symptom
Replaced with a third screen same symptom

I have never come across this before (usually solved by changing cable or screen)
Any thoughts please
Thanks

i dont understand very well what your means . do you see display but without backlight ?

 

[biling]

i dont understand very well what your means . do you see display but without backlight ?

No display at all.
The backlight turns on very briefly when power on then nothing at all

 

[Hosein Asadolahi]

No display at all.
The backlight turns on very briefly when power on then nothing at all

motherboard model number ?

 

[biling]

motherboard model number ?

ACLU5/AC6 NM-A281 Rev 1.0

 

[biling]

ACLU5/AC6 NM-A281 Rev 1.0

Hello, can i presume that no one has any alternative idea?

 

[Hosein Asadolahi]

Hello, can i presume that no one has any alternative idea?

volt check connector pin of lvds :
pin 1?
pin 14 ?
pin 16 ?
pin 19 ?
pin 20 ?
pin 21 ?
pin 23 ?

 

[biling]

volt check connector pin of lvds :
pin 1?
pin 14 ?
pin 16 ?
pin 19 ?
pin 20 ?
pin 21 ?
pin 23 ?

pin 1 20.28v
pin 14 0v
pin 16 0.0005v
pin 19 0.17v
pin 20 0v
pin 21 3.366v
pin 23 3.366v

 

[Hosein Asadolahi]

pin 1 20.28v
pin 14 0v
pin 16 0.0005v
pin 19 0.17v
pin 20 0v
pin 21 3.366v
pin 23 3.366v

at first : reprogram bios and ec (it8586)

 

[biling]

at first : reprogram bios and ec (it8586)

Sorry for my ignorance. Can you point me to instructions to flash bin and ec with bin file?

 

[Hosein Asadolahi]

Sorry for my ignorance. Can you point me to instructions to flash bin and ec with bin file?

you can program it with universal programmer like SVOD programmer .

 

[biling]

you can program it with universal programmer like SVOD programmer .

Thankyou, I must be missing something. Why would flashing the bios help seeing as the computer works perfectly fine on an external screen. If the bios is corrupted I could just flash the bios supplied by Lenovo for this motherboard. I wouldn't need special hardware to do it?

 

[biling]

you can program it with universal programmer like SVOD programmer .

I have found the H2OFFT-W.exe flash utility used for these motherboards Insyde H2O boards. Can I use this to flash your bin's. It has config file platform.ini

MULTI_FD]
Flag=1
FD#01=ID,Swift3,SU4EA.bin
FD#02=ID,HE4EA,HE4EA.bin and i tried changing these names to your file but no joy

Can you please explain what the bios file you have supplied is going to do?

 

[Hosein Asadolahi]

MULTI_FD]
Flag=1
FD#01=ID,Swift3,SU4EA.bin
FD#02=ID,HE4EA,HE4EA.bin and i tried changing these names to your file but no joy

Can you please explain what the bios file you have supplied is going to do?

you must program bios with hardware programmer not with software bro . as i said it before use universal programmer like svod not other one .

 

[azor82]

you must program bios with hardware programmer not with software bro . as i said it before use universal programmer like svod not other one .

ive purchase Universal Programmer RT809H; i can upload to machine this version to?

 

[Hosein Asadolahi]

ive purchase Universal Programmer RT809H; i can upload to machine this version to?

yes