dell inspiron 5050 screen turned off

[mhmad_82]

Hi guys
My problem is when I put the battery in the screen turns off and the laptop continues to work
After checking, i found with the battery in that the voltage LVDS_VDD_EN goes

any ideas

[mon2]

Re: dell inspiron 5050 screen turned off

Hi. Not sure why your post is in this part of the forum. It should be under laptops.

1) with a power adapter, the LVDS_VDD_EN signal remains active? What is the voltage reading with the adapter?

2) is the battery a known good battery?

3) with the battery (only) does the LVDS_VDD_EN ever have a valid value?

4) what if you have battery AND then add the adapter? Does LVDS_VDD_EN return to a valid value?

[mhmad_82]

Re: dell inspiron 5050 screen turned off

firstable , I apologize for the posting this section

With the battery LVDS_VDD_EN it becomes (0) even if the adapter is plugged in

The battery is working ,I tested on another laptop

Without the battery, the laptop works fine

[mon2]

Re: dell inspiron 5050 screen turned off

1) post the voltage reading for LVDS_VDD_EN with the power adapter connected.

2) post the voltage reading for LCDVCC_EN (pin 3 of the dual diode D4901) with the power adapter connected.

[mhmad_82]

Re: dell inspiron 5050 screen turned off

Thank to you guys flashing bios solve th broblem