Hello everyone,
I have a Lenovo V15-IKB that had a damaged motherboard. I replaced it with a motherboard from a Lenovo V15-IIL.
The board powers on, but it shuts down after about 10-15 seconds. This only happens when the internal display (LCD panel) is connected.
Here's what I've tried so far:
It seems something related to the LCD circuit on the V15-IIL board is causing a shutdown, maybe a protection mechanism? The V15-IKB display/cable might be incompatible in some way I'm not aware of, even though it shows an image briefly.
What could be the problem here? Does anyone have any ideas on how to diagnose or fix this board?
Thanks in advance for any help!
I have a Lenovo V15-IKB that had a damaged motherboard. I replaced it with a motherboard from a Lenovo V15-IIL.
The board powers on, but it shuts down after about 10-15 seconds. This only happens when the internal display (LCD panel) is connected.
Here's what I've tried so far:
- When the internal display is disconnected, the laptop works perfectly fine via HDMI.
- The laptop shows an image on the internal display for a few seconds before it shuts down.
- I tried swapping the LCD panel with a known good one.
- I tried swapping the LCD cable with a known good one.
- I've tried running it with and without the battery.
- I've tried booting with only the display connected (no keyboard, touchpad, etc.) - the problem persists.
- I tried flashing a replacement BIOS prepared by user m1ch43lzm, but this didn't help.
- I also replaced the entire cooling assembly (heatsink and fan), which also didn't solve the issue.
It seems something related to the LCD circuit on the V15-IIL board is causing a shutdown, maybe a protection mechanism? The V15-IKB display/cable might be incompatible in some way I'm not aware of, even though it shows an image briefly.
What could be the problem here? Does anyone have any ideas on how to diagnose or fix this board?
Thanks in advance for any help!