HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE • Forum ELVIKOM

HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

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Topic title should contain: the device's manufacturer, full model and the brief description of problem.
Topic message should contain: the PCB marking code (required in case of hardware repairs), an extended description of problem, things you have checked/replaced/measured, your conclusions and the question. If you are not able to find the PCB marking code, please read THIS TOPIC. If you still cannot locate the PCB markings, please upload a clean, both-side photos of the mainboard - it is required to remove any films, modules or brackets possibly covering these markings.
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This topic is marked as ARCHIVAL. Please only reply if your message contains the solution (Terms and Conditions p. 12.1).

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#1 HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by gzb90 • 23 July 2022, 18:26

HP 17-BY0617NG

17" KBL-6L
SPS: L22742-601
CPU: SR3LA
GPU: 216-0890010

Laptop uruchamia się na chwile, rozkręca się wentylator i gaśnie. Zalanie przy kontrolerze PWM: U66000 - RT3602ae - ZJEDZONY VIN i możliwe ze zwarty z TSEN_MAIN. sygnał PWM dobry tylko dla pinu PWN_SA, na pinach PWM_MAIN oraz PWM_AUXI stałe 2,4v. Sygnał EN obecny 3,5v, VDIO, VCLK - sztywno 1v, brak zegara.
ALERT - 0.08V, VR_HOT - 1v
VR_READY - 3,3v

Brak zwarć na bramkach DrMOS. Podejrzewam uszkodzenie procesora. Zamieszczam zdjęcia płyty oraz wideo z próby zwarciowej.

Generatory kwarcowe działają poprawnie.

Próba zwarciowa na VCC_CORE - 1v, 1.8A - https://drive.google.com/file/d/1xJCywy ... sp=sharing
Próba zwarciowa na PVCSGT - 1v, 0.25A - https://drive.google.com/file/d/1jDCOL6 ... sp=sharing

Pomiary rezystancji i napięć(przez tą chwilę gdy jest uruchomiony):

L6000 30k 2,2v
L60800 36o 1v
L66610 14,5o 1,05v
L66080 5,2o 0v
L66010 5,2o 0v
L66310 8o 0v
L60200 40k 5,1v
L60100 40k 3,38v
L67200 67o 0v
L67020 27o 0v
L67010 27o 0v
L60300 216o 1,23v

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Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by Google Adsense [BOT] • 23 July 2022, 18:26

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#2 Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by matic • 24 July 2022, 08:45

gzb90 wrote:Zalanie przy kontrolerze PWM: U66000 - RT3602ae - ZJEDZONY VIN i możliwe ze zwarty z TSEN_MAIN.
Podejrzewam uszkodzenie procesora.

Hello!
Yes, in such a case it's a very high probability the APU hybrid is damaged.

Try to reflash the BIOS chip. Don't forget to save the old dump. If it doesn't change anything, try to replace the APU power supply controller chip U66000. If it still doesn't change anything, the APU is damaged.

By the way, the missing power rail is PVCCGT (not PVCSGT).
And the motherboard marking code is SNAPE-6050A2982701-MB-A02(A2) 6L

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#3 Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by gzb90 • 25 July 2022, 21:37

matic wrote:Try to reflash the BIOS chip. Don't forget to save the old dump. If it doesn't change anything, try to replace the APU power supply controller chip U66000. If it still doesn't change anything, the APU is damaged.

I forgot to mention. I reflashed BIOS and EC with Me-cleared firmware extracted from update package. U66000 also was replaced. I think it is over.

Thanks mate!

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#4 Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by Vogelek23 • 13 April 2025, 15:24

Wątek odblokowany na prośbę autora.

ELVIKOM LAB Ltd - Apple Repairs & PCB Design - Free Quotes! https://www.elvikom.co.uk
Jeśli skorzystałeś z mojej pomocy na Forum, możesz w ramach podziękowania wspomóc jego rozwój. Kliknij tutaj, aby dowiedzieć się więcej.

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#5 Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by gzb90 • 13 April 2025, 18:23

Trafiła się złamana płyta ze sprawną hybrydą którą wymieniłem, zmiana jest taka że pojawiły się napięcia CPU, pobór wzrósł ze 150mA do 260, natomiast zachowanie jest to samo - laptop wyłącza się, praktycznie po takiej samej chwili. Na termowizji nie widać niczego niepokojącego.

Jakieś sugestie co można by jeszcze sprawdzić?

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#6 Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by matic • 14 April 2025, 08:14

Measure the voltage to ground on pin 38 of chip U66000.

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#7 Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by gzb90 • 14 April 2025, 08:30

matic wrote:Measure the voltage to ground on pin 38 of chip U66000.

3.06V for the exact same time of 0.26a consumption.
Voltage on PVCORE - 0.85v

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#8 Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by matic • 14 April 2025, 09:32

Try to reflash the BIOS chip again with the old (original) dump.

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#9 Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by gzb90 • 18 April 2025, 20:50

matic wrote:Try to reflash the BIOS chip again with the old (original) dump.

Original dump with fresh me, same behavior.

Because this current drop looks like forced shutdown (from 0.25A to 10mA) I tried new EC with original and even fresh dump - still no luck.

Any ideas?

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#10 Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by carrneiro • 18 April 2025, 21:35

Old dump + old ME. Check..

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#11 Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by gzb90 • 19 April 2025, 10:16

carrneiro wrote:Old dump + old ME. Check..

Unfortunately nothing changed

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Re: HP 17-BY0617NG, 17" KBL-6L, L22742-601 - Brak VCCORE

by Google Adsense [BOT] • 19 April 2025, 10:16

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