• Lenovo Legion 5 17ACH6H NM-D562 rev.: 1.0 death after LCD replacement.

It is currently 16 July 2025, 15:32

 [SOLVED] Lenovo Legion 5 17ACH6H NM-D562 rev.: 1.0 death after LCD replacement.

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#1 Lenovo Legion 5 17ACH6H NM-D562 rev.: 1.0 death after LCD replacement.

by ARSiq • 10 July 2025, 09:11
Got this notebook after owner tryed to replace broken LCD by himself.
Notebook wont start because of 0,75VALW. When jumper PJ7702 is open, i have 3V and 5V and 0,75 on PL7701, when closed it try to start but no 5V an under 1V on 3V.
Resistance to GND onQX3 is just 46 Ohm on pin 5, 0,45kOhm on pin 1-3.

I think CPU is gone, i just need someone to confirm that.
Thanks

Re: Lenovo Legion 5 17ACH6H NM-D562 rev.: 1.0 death after LCD replacement.

by Google Adsense [BOT] • 10 July 2025, 09:11

#2 Re: Lenovo Legion 5 17ACH6H NM-D562 rev.: 1.0 death after LCD replacement.

by tekort • 10 July 2025, 09:48
ARSiq wrote:under 1V on 3V.


Something on line 3V is shorted I suppose.

Post resitance measurments from all coils on the motherboard to ground.

#3 Re: Lenovo Legion 5 17ACH6H NM-D562 rev.: 1.0 death after LCD replacement.

by ARSiq • 10 July 2025, 13:58
PL6202 15k
PL3201 2,5k
PL3001 167 Ohm
PL5401 1M
PL7701 47 Ohm
PL6601 8,3k
PL1009 1, 1 Ohm
PL 1003-6 4Ohm
PL2001-5 0,1 Ohm
PL4005 103 Ohm
PL 4006 103 Ohm

#4 Re: Lenovo Legion 5 17ACH6H NM-D562 rev.: 1.0 death after LCD replacement.

by ARSiq • 11 July 2025, 16:11
I removed PL 1009 an i have 0,75V, 3V, 5V, 1,2V
Is the CPU gone?

#5 Re: Lenovo Legion 5 17ACH6H NM-D562 rev.: 1.0 death after LCD replacement.  [SOLVED] 

by matic • 11 July 2025, 16:33
ARSiq wrote:Resistance to GND onQX3 is just 46 Ohm on pin 5
This resistance is fine.

ARSiq wrote:PL1009 1, 1 Ohm
But this resistance is too low. Measure the resistances to ground on both pads on the place of this coil.
If the low resistance is present on the system side (power rail "+VDDCR_SOC"), perform a short circuit test with a voltage limit of 1V. If only the APU gets warm, you have an answer.

#6 Re: Lenovo Legion 5 17ACH6H NM-D562 rev.: 1.0 death after LCD replacement.

by ARSiq • 16 July 2025, 13:58
Thank for help

Re: Lenovo Legion 5 17ACH6H NM-D562 rev.: 1.0 death after LCD replacement.

by Google Adsense [BOT] • 16 July 2025, 13:58
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