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Nagyesz started a topic Lenovo IdeaPad Gaming 3 15ACH - Ideapad 3 well known solder joint issues

in Troubleshooting Laptops, Tablets, and Mobile Devices

03-01-2025, 11:11 AM
Lenovo IdeaPad Gaming 3 15ACH - Ideapad 3 well known solder joint issues

I have a Lenovo IdeaPad Gaming 3 15ACH, which has started exhibiting the well-known issues of the Lenovo IdeaPad 3.

All stress tests run perfectly, and there are no performance issues. However, the solder joints are almost certainly starting to fail. If the top two screws on the back are not screwed in, moving the screen results in a BSOD or, in some cases, a slight artifact and freeze. This is a 2023 notebook..

How can I extend its lifespan? Could reflow help?

It has ryzen 5 5500h, rtx 2050, no soldered ram.

Example of the artifacts:
[URL=filedata/fetch?id=3584078&d=1740849041][ATTACH=JSON]{"alt":"Click...

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Last edited by Nagyesz; 03-01-2025, 11:25 AM.
Nagyesz replied to Lenovo ideapad 3 15IL05 - ram issue

in Troubleshooting Laptops, Tablets, and Mobile Devices

01-11-2025, 10:54 AM
Update:
If I use it with the screen placed on the ground instead of the bottom cover, it doesn't freeze.
I'll keep this bios on))

Interestingly it doesn't freeze when moving the ram but rather when moving the lid

Could be solder cracks?

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Last edited by Nagyesz; 01-11-2025, 12:19 PM.
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Nagyesz replied to Lenovo ideapad 3 15IL05 - ram issue

in Troubleshooting Laptops, Tablets, and Mobile Devices

01-11-2025, 09:47 AM
I did it, but unfortunately, the problem is the same, although not immediately, and looks more stable

It mostly happens when the laptop is moved.

[ATTACH=JSON]{"alt":"Click image for larger version Name:\t462576964_636397252246762_2776691451558573836_n.jpg Views:\t0 Size:\t87.0 KB ID:\t3546309","data-align":"none","data-attachmentid":"3546309","data-size":"custom","height":"1067","title":"462576964_636397252246762_2776691451558573836_n.jpg","w...

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Nagyesz replied to Lenovo ideapad 3 15IL05 - ram issue

in Troubleshooting Laptops, Tablets, and Mobile Devices

01-11-2025, 08:41 AM
Here it is:

(also tried to solder, without luck.

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Last edited by Nagyesz; 01-11-2025, 09:44 AM.
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Nagyesz replied to Lenovo ideapad 3 15IL05 - ram issue

in Troubleshooting Laptops, Tablets, and Mobile Devices

01-11-2025, 05:39 AM
Thank you for your idea, I will try it soon.

Do you think the heat gun will work, or would a small tipped soldering iron be better?...

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Nagyesz started a topic Lenovo ideapad 3 15IL05 - ram issue

in Troubleshooting Laptops, Tablets, and Mobile Devices

01-11-2025, 05:17 AM
Lenovo ideapad 3 15IL05 - ram issue

Hi all,
I've encountered an issue I've never experienced before..

The Lenovo works perfectly, it has 4gb soldered ram and an additional slot. With just the 4gb the laptop passes all tests, everything is working. However no matter what frequency or capacity of ram I add to the extra slot the display starts artifacting completely randomly in both in the bios and in win and the only solution is to shut down.

I've inspected the pins of the extra slot with a magnifying and didn't notice anything unusual. I've also tried multiple ram modules, but the issue is the same....

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Nagyesz replied to Lenovo V14 G2 heating component

in Troubleshooting Laptops, Tablets, and Mobile Devices

12-02-2024, 04:11 AM
Yea. But without SVOD3/SVOD4 it is impossible.

So, for now, the board doesn’t have much of a future....

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Nagyesz replied to Lenovo V14 G2 heating component

in Troubleshooting Laptops, Tablets, and Mobile Devices

12-02-2024, 12:04 AM
Bad SIO

I’m almost certain about this, but what’s even worse is that there’s no pre-programmed SIO available for sale anywhere, and I’d also need a bga machine...

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Nagyesz replied to Lenovo ideapad 330ICH - Dead, no volts on coils

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-18-2024, 09:49 AM
Before I removed the mosfet for measurement, I took a closer look at the capacitors and found a leaking capacitor.

I replaced it, turned it on, and it works....

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Nagyesz replied to Lenovo ideapad 330ICH - Dead, no volts on coils

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-17-2024, 10:57 AM
After separating PJ508, the short is on the VDDQ_VIN line, 1.2 Ohms.
The short disappeared at PC526. [I][B]PQ501 is the next suspect, AON7380_DFN8-5.[/B][/I]

Should I replace the heating mosfet right away?

Also PU501 (controller ic) is suspect.

What is the next logical step?After separating PJ508, the short is on the VDDQ_VIN line, 1.2 Ohms.
The short disappeared at PC526. [I][B]PQ501 is the next suspect, AON7380_DFN8-5.[/B][/I]

Should I replace the heating mosfet right away?

Also PU501 (controller ic) is suspect.

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Last edited by Nagyesz; 10-17-2024, 11:07 AM.
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Nagyesz replied to Lenovo ideapad 330ICH - Dead, no volts on coils

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-17-2024, 09:08 AM
UPDATE: I've identified the overheating component. It's either the PC526 or the PQ501.

PC526 and 25,26 [I][B]1.5Ohms [/B](VDDQ_VIN)

PJ508 jumper also 1.5Ohms

Now I will seperate PJ508 to check which rail has the short[/I]UPDATE: I've identified the overheating component. It's either the PC526 or the PQ501.

PC526 and 25,26 [I][B]1.5Ohms [/B](VDDQ_VIN)

PJ508 jumper also 1.5Ohms

Now I will seperate PJ508 to check which rail has the short[/I]UPDATE: I've identified the overheating component. It's either the

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Last edited by Nagyesz; 10-17-2024, 09:18 AM.
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Nagyesz replied to Lenovo ideapad 330ICH - Dead, no volts on coils

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-17-2024, 07:31 AM
I didn't touch it. Most motherboards have several versions, so it might seem like something is missing from the board, but that's how they are from the factory. The motherboards are manufactured first, and the various components are not on them by default.
That's why the motherboard number is important, and just the model is not enough.

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Nagyesz replied to Lenovo ideapad 330ICH - Dead, no volts on coils

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-17-2024, 06:30 AM
I will try injecting the 1v again soon, also here's a picture of the affected area;
[ATTACH=JSON]{"data-align":"none","data-size":"large","data-attachmentid":3485654}[/ATTACH]...

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Nagyesz replied to Lenovo ideapad 330ICH - Dead, no volts on coils

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-17-2024, 02:36 AM
Nothing is warming up, any further ideas on how to figure out why I don't have a main power rail?

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Nagyesz replied to Lenovo ideapad 330ICH - Dead, no volts on coils

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-13-2024, 07:50 AM
On 1V 3A
PR301 takes 0.6A and it fluctuating to 0.5A

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Nagyesz replied to Lenovo ideapad 330ICH - Dead, no volts on coils

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-13-2024, 07:24 AM
Thank you for your advice.[LIST][*]pr301 to PL3102 [B]7.5 ohms[/B][*]pr301 to PL3001-2-3 [B]4.5 ohms[/B][*]pr301 to PL3201 [B]15.9 ohms[/B][*]pr301 to PL5801-2-3 [B]3.9 ohms[/B][*]pr301 to PL701 [B]36.8 ohms[/B][*]pr301 to PL501 [B]147 ohms[/B][*]pr301 to PL503 [B]41 ohms[/B][*]pr301 to pl3101 [B]4.5 ohms[/B][*]pr301 to PL5501 266 ohms[*]pr301 to PL402 [B]OL[/B][*]pr301 to PL301[B] OL[/B][*]pr301 to PL401 [B]OL[/B][*]pr301 to PL502 [B]OL[/B][/LIST]

What now?
Thank you for your advice.[LIST]

pr301 to PL3102 [B]7.5 ohms[/B]

pr301 to PL3001-2-3 [B]4.5 ohms[/B]

pr301 to PL3201
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Last edited by Nagyesz; 10-13-2024, 07:31 AM.
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Nagyesz started a topic Lenovo ideapad 330ICH - Dead, no volts on coils

in Troubleshooting Laptops, Tablets, and Mobile Devices

10-11-2024, 10:12 AM
Lenovo ideapad 330ICH - Dead, no volts on coils

Hi everyone, I replaced this motherboard because it was important to get it working, but it's been with me for a very long time. Now I finally have time to figure out what the problem is,
I've never encountered something like this before;

No charging light, full dead

Lenovo Ideapad 330-17ICH[LIST][*][B]PL3102[/B]: 5 ohms[*][B]PL3001[/B]: 3.2 ohms[*][B]PL3101[/B]: 2 ohms[*][B]PL5801[/B]: 3.5 ohms[*][B]PL5501[/B]: 270 ohms[*][B]PL701[/B]: 35 ohms[*][B]PL501[/B]: 146 ohms[*][B]PL503[/B]: 390 ohms[*][B]PL402[/B]: OL (0.27V) +5VALW_P[*][B]PL301[/B]: OL[*][B]PL401[/B]:...

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Nagyesz replied to Lenovo V14 G2 heating component

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-09-2024, 10:05 AM
So, is the motherboard faulty because of the SIO? Is there anything else I could check on the motherboard?

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Nagyesz replied to Lenovo V14 G2 heating component

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-07-2024, 03:47 AM
Yes, that is, the +3VL line remained at 4.7-4.6 ohms, and with the PSU at 1.2V, the line drew 0.25A. Nothing really heated up again, maybe the UE1 where a temperature change could be felt.

I believe it can now be the +3VL line is the main suspect. However, there was only very slight heating at UE1.

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Nagyesz replied to Lenovo V14 G2 heating component

in Troubleshooting Laptops, Tablets, and Mobile Devices

09-07-2024, 03:25 AM
I did it. [I][B]PU[/B][/I]6001 13 pin OL, but the other line still shows 4.6 Ohms, so I'll start experimenting with the PSU on 1-1,2VI did it. [I][B]PU[/B][/I]6001 13 pin OL, but the other line still shows 4.6 Ohms, so I'll start experimenting with the PSU on 1-1,2VI did it. [I][B]PU[/B][/I]6001 13 pin OL, but the other line still shows 4.6 Ohms, so I'll start experimenting with the PSU on 1-1,2V

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