isa198585
Senior Member
Last Activity: Today, 08:42 AM
Joined: 02-23-2020
Location: wien
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The BIOS from post 5 worked for me, however, I should mention that it didn't work the first time I turned it on. I forgot to turn off the device, and after 2-3 hours, it turned on by itself -
Sorry you are rigth, here ist the correkt number : PF38TKVJ...
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Hello everyone, I have a Lenovo Legion 5 here, and after turning it on, only the power LED lights up. Sometimes the keyboard backlight comes on, but not always. I suspect that the BIOS is corrupted or something went wrong during an update. I have extracted the BIOS and am sending it here. Could someone provide me with the correct BIOS? Thank you very much.
[B]device[/B] : laptop
[B]brand[/B] : Lenovo
[B]model[/B] : Legion 5 Pro 16ach6h
[B]board no[/B]: NM-D562 rev: 3.0
[B]s/n:[/B] PF38TKJVHello everyone, I have a Lenovo Legion 5 here, and after turning it...Leave a comment:
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remove this mosfet in try again, in my case was this Mosfet dead....
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srry about that, yes sure, that is NM-D562 Rev. 3.0Leave a comment:
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PR1046 pin 1 and PR1043 pin 1 has 1.8V
Is that what you meant with 1.8ALW and 1.8VVS?Leave a comment:
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lenovo legion 5 15ach6h Power on No Image
Hi, I have here Lenovo Legion 5 15ACH6H.
Power on.
Power Light is on.
Keyboard Ligth is on.
CPU Fun is On.
CPU/GPU will normal hot.
BIOS already updated.
I found today that the BIOS battery only has 2.7V, is could that be the reason? -
I think also. thank you so mouch for your Help.Leave a comment:
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PLW1 is still 1,6 ohmsLeave a comment:
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I connected 3V. On PLV3, it has reduced to 0.3 ohms; previously, it was 1.6 ohms. But on VCORE PLZ1, it is still 1.6 ohms, and when I connect 3V there, the CPU gets hotLeave a comment:
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After a longer inspection of this board, I found that PQW1 and PLB1 are very hot, reaching 105°CLeave a comment:
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Look, let's take PRB3 and PRB46; there is no short to GND on pins 1 and 2. There are only a few components on this side, and they work without any problems, which is why they were removed. However, nothing changed after I put PRB3 and PRB46 back on; the measurements are still the same. I'm sorry that you have to write so much because of me. I am so sorry about thatLeave a comment:
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No, it is the right side. As I mentioned at the beginning, this board view is not exactly like my board. Look at the picture again, it says PRB3. 'mon2' wrote that I should remove PRB3 and PRB46, message number 5. My measurements are correct; I have checked them again. With PRB3 and PRB46 or without, it doesn't change anything.
The board looks like it has liquid Damage, but it doesn't. The traces are from "Kontakt spray 530"...Leave a comment:
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I have no idea what else I could be doing wrong...
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resistance between PRB3 and +VCC_CORE is 18.0 ohmsLeave a comment:
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I selected PCZ102 (+VCC_CORE) I get 18,0 ohms....Leave a comment:
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I am sorry, I was in Diode mode. hier correct measurements 0,165 and Pic....
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0,025 and 0,025Leave a comment:
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I removed PRB3 and PRB46, but the short on pins 3 and 4 remains. It looks like ACN_CHGR is shorted to ground because I removed PQB1 and PQB13, but the short is still there. Then I removed PLB1, but the short didn't go away
Look [URL="https://youtu.be/cdwmLze65VY"]Video[/URL]I removed PRB3 and PRB46, but the short on pins 3 and 4 remains. It looks like ACN_CHGR is shorted to ground because I removed PQB1 and PQB13, but the short is still there. Then I removed PLB1, but the short didn't go away
Look [URL="https://youtu.be/cdwmLze65VY"]Video[/URL]Leave a comment:
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Does anyone have any ideas?Leave a comment:
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