I get an error with no RAM (blinking orange/white led) : how much !
LA-C631p is similir to LA-C621P :
Brd : https://www.badcaps.net/forum/troubl...65#post1669965
i guess that you have try a trusted ram at different slot!
lapfix
Badcaps Legend
Last Activity: Today, 11:40 AM
Joined: 03-19-2020
Location: my house
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Start by beginning :
Pq 100 and pq 101 voltage at drain,source and gate
After pu100 /
pin 2 ,13,22 voltage and resistance
Pr102 voltage and resistanceLeave a comment:
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Thank you mon2..i got this video and i also share a pictures of bypass for many models her in badcaps.
I m Just asking how to confirm that the issue is cd3301 and need to bypass.Leave a comment:
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CD3301 cause Many issue..with this motherboard how to confirm that DC-block-gc is defective!. Ic not heating and this pin is not shorted!.
How to confirm that CD3301 is defective !.no heating ,all supply is present !Leave a comment:
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Back to this issue, i think it's a common fault.
same lap with same motherboard (la-9591p) with a same behaviour....fan not working..display present.
If i power on the lap without ram the fan is working proprely..but with ram no chance.
i try official bios , another fan , à multiples ram but still same behaviour.
jfan1 with ram :
pin4 =5v present
Pin2 = fan1 tach 3v
pin3 =fan1 pwm 0v
jfan1 without ram :
pin4 =5v present
Pin2 = fan1 tach 1.6v
pin3 =fan1 pwm 1.6v.
R408/R376 pullup...Leave a comment:
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But you didn't post it here to help others😏...Leave a comment:
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The boardview :
https://www.badcaps.net/forum/troubl...05#post3719605Leave a comment:
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Lenovo Legion Pro 5 16ARX8_LCFC_KY585_KY586_KY587_KY588_NM_F251
Drag and drope in BoardViewer 2.1.0.8...Leave a comment:
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Try post #24 solution...Leave a comment:
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Motherboard reference !...Leave a comment:
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1st boot, press F2, write service tag, disable Absolute, save, restart.
2nd boot press Alt+F to exit manufacturing mode.
Good luck...Leave a comment:
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Just using search at this forum
Schematics and BRD
https://www.badcaps.net/forum/troubl...-intel-nm-e211
Look at P 51 / 89Last edited by lapfix; 08-29-2025, 01:30 AM.Leave a comment:
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Upload your schematics or BRD to give you more help
As mon2 mention before , we don't know the type of QB5 , N or P channel !
Post all the voltages of your charger circuit too...Last edited by lapfix; 08-29-2025, 01:19 AM.Leave a comment:
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