• HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

It is currently 14 December 2024, 06:40

 [SOLVED] HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

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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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#1 HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 12 March 2024, 22:00
Witam

Pomierzyłem cewki i jest brak napięcia dla CPU.
Układ ISL95859A HRTZ ogólnie zwraca stan wysoki na PGOOD.

Ogólny objaw to laptop włącza się, pobór utrzymuje się na poziomie 180mA (po rozpędzeniu się na MAX wentylatora).
Wygląda to na nie zakończenie procedury POST no i brak napięć na CPU budzi podejrzenia.

Co tu dalej pomierzyć?

Pozdrawiam!

Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Google Adsense [BOT] • 12 March 2024, 22:00

#2 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 14 March 2024, 06:22
up

#3 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 18 March 2024, 19:44
up

#4 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by pehol193 • 20 March 2024, 10:48
Zaprogramuj BIOS czystym wsadem ze strony HP, wyczyść ME Region.

#5 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 20 March 2024, 11:20
BIOS był robiony wraz z wsadem EC programem Pana Andrzeja, bez zmian.

#6 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by matic • 31 March 2024, 11:53
Specify the voltages to ground on all coils.

#7 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 1 April 2024, 10:50
L60000 11,9V
L60200 5,2V
L60400 0V
L60300 1,2V
L61400 1V
L60100 3,3V
L60600 1V
L66610 1V
L66010 0V
L66020 0V
L66310 0V
L60500 0,95V

#8 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by matic • 2 April 2024, 08:59
How about the coils L60800, L61700?

#9 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 3 April 2024, 15:52
1,5V and 1,8V

#10 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by matic • 4 April 2024, 08:11
- Measure the resistance to ground on coil L60400.
- Post a clear picture with a visible markings on chip U60400.

#11 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 4 April 2024, 17:35
48k ohm

Foto:
Image

#12 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by matic • 6 April 2024, 16:50
Unfortunately I can't identify this chip.
You can open a new topic in "NAPRAWA WARSZTAT" department and ask for help in identification of this chip.

#13 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 7 April 2024, 20:39
Jest to układ: G2822ATB1U

#14 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by matic • 8 April 2024, 07:02
Measure the voltages to ground on pins 1, 4, 5 of this chip.

#15 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 9 April 2024, 09:33
1- 3,3
4- 5
5- 3,3

#16 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by matic • 10 April 2024, 14:19
Open the jumper PAD50400 and remeasure the voltage to ground on coil L60400.
If there is still no voltage, replace the chip U60400.
Image

#17 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 10 April 2024, 18:05
OK

Zmierzyłem ponownie dokładnie tą cewkę L60400 i zarówno ze zworką jak i bez zworki jest napięcie 2,55V.

#18 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 16 April 2024, 10:47
UP

#19 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 18 April 2024, 07:26
up

#20 Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Golima • 24 April 2024, 16:34
up

Re: HP EB 840 G5 | COMPUTRO-6050A2945601-MB-A01 - Brak napięcia dla CPU

by Google Adsense [BOT] • 24 April 2024, 16:34
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