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Ta tema je označena kot ARHIVSKA. Odgovorite samo, če vaše sporočilo vsebuje rešitev (Pravila in Pogoji, 12.1).
#21 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
matic •
30 Januar 2023, 15:34
Measure the resistance between small central pin and inner positive pin of the power supply itself. Power supply must be disconnected from the board and also disconnected from the mains wall socket.
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Re: Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a Google Adsense [BOT] • 30 Januar 2023, 15:34
#22 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
mmike •
1 Februar 2023, 08:09
Measure the resistance between small central pin and inner positive pin of the power supply itself. Power supply must be disconnected from the board and also disconnected from the mains wall socket.
85 kOhm
#23 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
matic •
1 Februar 2023, 20:59
With this resistance the voltage on the central pin of the DC socket should be around 1.4V.
Please, post a clear picture of the KBC chip area of the board with a nearby surroundings.
#24 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
mmike •
2 Februar 2023, 08:11
Please, post a clear picture of the KBC chip area of the board with a nearby surroundings.
#25 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
matic •
2 Februar 2023, 22:08
Measure the resistance between the point A and central pin of the DC socket.
#26 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
mmike •
6 Februar 2023, 15:59
Measure the resistance between the point A and central pin of the DC socket.
2kOhm
#27 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
matic •
6 Februar 2023, 18:25
mmike napisal/-a:Measure the resistance between the point A and central pin of the DC socket.
2kOhm
That's fine.
Are you able to follow the copper trace from the point "A" and locate this 2kΩ resistor on the board?
#28 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
mmike •
7 Februar 2023, 13:48
O to chodziło?
#29 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
matic •
7 Februar 2023, 19:43
mmike napisal/-a:O to chodziło?
[ Obrazek ]
Yes, that's it.
Remove this resistor from the board and perform the following measurements.
- Measure the resistance between point "B" and central pin of the DC socket.
- Measure the voltage to ground on point "B".
#30 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
mmike •
8 Februar 2023, 14:36
-Measure the resistance between point "B" and central pin of the DC socket.
103Ohm
Measure the voltage to ground on point "B"
1.5V
#31 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
matic •
8 Februar 2023, 17:36
Measure the resistance to ground on point "A".
#32 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
mmike •
9 Februar 2023, 08:24
Measure the resistance to ground on point "A".
0.3mOhm
#33 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
matic •
9 Februar 2023, 11:36
Solder the removed 2kΩ resistor from the post #28 back to the board and measure the voltages to ground on both pins of this resistor.
#34 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
mmike •
9 Februar 2023, 15:43
1- 0.1V
2- 0.4V
#35 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
matic •
9 Februar 2023, 16:02
Remove the diode "1" from the board and remeasure the voltage to ground on the point with 0,1V.
If nothing changes, remove the diode "2" as well and remeasure the voltage.
#36 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
mmike •
15 Februar 2023, 14:21
Usunięta dioda 1 - Napięcie nadal 0.1V
Usunięta dioda 2 - Napięcie 0,46V
#37 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
matic •
20 Februar 2023, 20:08
mmike napisal/-a:Usunięta dioda 1 - Napięcie nadal 0.1V
Usunięta dioda 2 - Napięcie 0,46V
What is the voltage with both diodes removed from the board?
#38 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
mmike •
21 Februar 2023, 08:05
Usunięta dioda 2 - Napięcie 0,46V
#39 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
matic •
21 Februar 2023, 12:04
Lift the marked pin of the KBC chip (or cut the copper trace to this pin) and remeasure the voltage to ground on the point "A" with both diodes soldered to the board.
#40 Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a
mmike •
3 Marec 2023, 14:35
Lift the marked pin of the KBC chip (or cut the copper trace to this pin) and remeasure the voltage to ground on the point "A" with both diodes soldered to the board.
0.13V
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Re: Brak reakacji HP OMEN 15-en1000 MB G3EF
Napisal/-a Google Adsense [BOT] • 3 Marec 2023, 14:35
Ta tema je označena kot ARHIVSKA. Odgovorite samo, če vaše sporočilo vsebuje rešitev (Pravila in Pogoji, 12.1).
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