• Dell Inspiron 15 3000 Series not turn on

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  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
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#21 Re: Dell Inspiron 15 3000 Series not turn on


by cygron 18 July 2024, 12:26
LCD1
Pin1 - 19.30V
Pin4 - 0V
Pin8 - 3.3V
Pin 20 - 0V
Pin 21 - 0V

Re: Re: Dell Inspiron 15 3000 Series not turn on


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#22 Re: Dell Inspiron 15 3000 Series not turn on


by matic 18 July 2024, 12:47
Measure the power consumption (in mA) of the board, when the machine is turned on with and without RAM memory connected.

#23 Re: Dell Inspiron 15 3000 Series not turn on


by cygron 18 July 2024, 14:16
When press power key power comsumption on dc supply is about 0.330amp and then stop at about 0.220amp with or without RAM.

#24 Re: Dell Inspiron 15 3000 Series not turn on


by matic 18 July 2024, 15:02
Measure the voltages to ground on listed pins, when the machine is turned on:
- On pin 1 of resistors R405, R712.
- On pin 2 of resistor R707.
- On pins 7, 17, 84 of KBC chip.

#26 Re: Dell Inspiron 15 3000 Series not turn on


by cygron 19 July 2024, 06:18
R405 pin1 - 1V
R712 pin1 - 1V (When i touch this point with multimeter probe, laptop suddenly turn off)
R707 pin2 - 1V (When i touch this point with multimeter probe, laptop suddenly turn off)
KBC pin7 - 3.37V
KBC pin17 - 3.37V
KBC pin84 - 3.26V

It doesn't work on an external monitor.

#27 Re: Dell Inspiron 15 3000 Series not turn on


by cygron 22 July 2024, 09:23
I reflash bios and now problem is solved. Laptop is running fine. Thanks for your helping Matic and Machine. Best regards.

Re: Dell Inspiron 15 3000 Series not turn on


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