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The ThinkPad T480 is a laptop released by Lenovo. It has an audio jack, two | The ThinkPad T480 is a laptop released by Lenovo. It has an audio jack, two USB-A ports, an HDMI port, and two USB-C ports. | ||
==Guides== | ==Guides== | ||
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===Known Problems=== | ===Known Problems=== | ||
An old version of the bios present on some machines like the T480 is known for continuously writing to the EEPROM that controls the USB-C port. This will slowly damage the port eventually destroying it. The damage can be stopped by updating the bios but can't be reversed. This requires replacing and reprogramming the EEPROM. TODO: Write a repair guide on how to fix this problem. | An old version of the bios present on some machines like the T480 is known for continuously writing to the EEPROM that controls the USB-C port. This will slowly damage the port eventually destroying it. The damage can be stopped by updating the bios but can't be reversed. This requires replacing and reprogramming the EEPROM. TODO: Write a repair guide on how to fix this problem. | ||
===Notes=== | |||
This laptop can still boot if the second phase of the VCCCPUCORE is missing (i.e. if the PU403 dual-mosfet chip is removed). | |||
It is not recommended to leave it unpopulated, but the information that it can boot like this is useful for debugging purposes. | |||
For example if you have a dead NCP302045 on VCCGFXCORE, and no NCP302045 chips in stock, then you can temporarily steal the NCP302045 from VCCCPUCORE's second phase for testing purposes, to see if it's even worth ordering a replacement part, or if the dead dual mosfet killed the GPU as well while it died. | |||
Revision as of 05:45, 16 January 2024
| Thinkpad T480 | |
|---|---|
| Manufacturer | Lenovo |
| Code name | Windu-2, NM-B501 |
| Release date | |
| Device type | Laptop |
This article is a stub. You can help Repair Wiki grow by expanding it
The ThinkPad T480 is a laptop released by Lenovo. It has an audio jack, two USB-A ports, an HDMI port, and two USB-C ports.
Guides
Explanatory Guides
Repair Guides
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Device pictures
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PCB pictures
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Reference measurements (also schematics if available)
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More Information/External Sources
Known Problems
An old version of the bios present on some machines like the T480 is known for continuously writing to the EEPROM that controls the USB-C port. This will slowly damage the port eventually destroying it. The damage can be stopped by updating the bios but can't be reversed. This requires replacing and reprogramming the EEPROM. TODO: Write a repair guide on how to fix this problem.
Notes
This laptop can still boot if the second phase of the VCCCPUCORE is missing (i.e. if the PU403 dual-mosfet chip is removed). It is not recommended to leave it unpopulated, but the information that it can boot like this is useful for debugging purposes. For example if you have a dead NCP302045 on VCCGFXCORE, and no NCP302045 chips in stock, then you can temporarily steal the NCP302045 from VCCCPUCORE's second phase for testing purposes, to see if it's even worth ordering a replacement part, or if the dead dual mosfet killed the GPU as well while it died.