Problem DELL LATITUDE E7440!!! No Power. PART 1

Problem DELL LATITUDE E7440!!! No Power.
HOW TO FIND PROBLEMS AND FIX THEM
DELL E7440
NO POWER

[@asharbinkhalil]

Need Help from motherboard experts.
My Dell e7470 was damged from dock area. All motherboard is working fine and laptop is booting but the dock area gets very hot and spark.
I don't want to dock in my laptop. Is there any way that i can disconnect the dock area from power.
The dock area is a separated slice in motherboard.

[@gunjanbhatti525]

Please share audio also.

[@bipul_info]

Charging indicator showing but not charge in battery😢

[@mirzausman3812]

Sir sath sath bola be kejya

[@mirzausman3812]

Good sir❤️

[@bipul_info]

Hii,,please reply