DeXXter
Senior Member
Last Activity: 10-28-2025, 02:17 AM
Joined: 08-08-2023
Location: Santiago
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Thanks pal!... -
[QUOTE=pappothar;n3742309]
Weird that you get oscillation...
In any case to measure on diode mode you need the laptop tured off, not connected to battery nor adapter, with the positive probe on ground and with negative one on the rail you want to measure.
Usually on 32khz you should get around 750-800 mV. If you get an OL on one of the sides then you most probably got a soldering issue under the cpu. Usually to repair this you have to desolder, reball and resolder the cpu....Leave a comment:
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Check on diode mode, you need value on both sides, around 800mV, if u have that and oscillation, you're fine....Leave a comment:
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If they're oscillating they're fine, voltage don't matter here....Leave a comment:
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I'm still working on this laptop tbh, replaced the cpu and even tho it turns on the vram has the clock stuck at 200mhz, pretty fcked up failure... Now with your laptop I would recommend you to check the signals on 32khz and 48mhz crystals, legions fails a lot here. If that's okay check activity on bios....Leave a comment:
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Lenovo legions need a programmed EC, it won't program iself. And prepare yourslef, because that's maybe not the main issue, most probably a technician was checking the laptops and shorted the 20v rail with the id pin. Happened to me with a legion 5 pro, in the end it had a lot of issue, along with a missing clock signal on cpu, had to reball the cpu and not even that fixed this damn laptop.Leave a comment:
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Before you jump into the battery repair, you need to check the motherboard, the first mosfet and the ones for charging the battery itself, check them on diode mode from source->drain and drain->source also between gate and source/drain. Also check the data lines on the battery connector. I have repaired a few laptops and on modern ones battery issues are not very common.Leave a comment:
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