Is there a way to troubleshoot the thermal issues without parts?
Metin:
I have a Lenovo T420 and the thermals of the computer are not exactly accurate. I am wondering if I can try anything before I buy new parts, since I'm closer to comfort then I want to be with the expected part costs to repair the entire system as it is. It would be nice if I could recalibrate the tempreature sensors and seeing what that does, but I can't find a clear way to do it.
As of now, I have tried the following fixes:
* Heatsink removal (dusting purposes)
* New TIM (Artic MX-4)
Neither of these fixed it, so I took the keyboard off to get an average on how hot the heatsink measures vs. what the computer reports, and this is why the readout is highly suspect.
Before I mention the readout from the measurements I took without the keyboard, this is what I get with Aida64:
[image|1151836]
As far as measurements from the heatsink itself, this is what I get with an IR thermometer:
* Vent: 57.6-67.8c
* Rear vent: 60c
* CPU plate: 61.2-66.6c
* Heatpipe: 35.2-52.4c
I have also measured it with a thermalcouple and did some datalogging from my multimeter, and this is what I got:
CPU plate:
* 32-53c
[image|1151832]
Heatpipe area 1:
* 42-49c
[image|1151833]
Heatpipe area 2 (opposite side measurement)
* 42-48c
[image|1151834]
CPU vent:
* 52-55c
[image|1151835]
Is there a way to troubleshoot the thermal issues without parts?
Metin:
-
I have a Lenovo T420 and the thermals of the computer are not exactly accurate. I am wondering if I can try anything before I buy new parts, since I'm closer to comfort then I want to be with the expected part costs to repair the entire system as it is. It would be nice if I could recalibrate the tempreature sensors, but I can't find a clear way to do it.
+
I have a Lenovo T420 and the thermals of the computer are not exactly accurate. I am wondering if I can try anything before I buy new parts, since I'm closer to comfort then I want to be with the expected part costs to repair the entire system as it is. It would be nice if I could recalibrate the tempreature sensors and seeing what that does, but I can't find a clear way to do it.
As of now, I have tried the following fixes:
* Heatsink removal (dusting purposes)
* New TIM (Artic MX-4)
Neither of these fixed it, so I took the keyboard off to get an average on how hot the heatsink measures vs. what the computer reports, and this is why the readout is highly suspect.
Before I mention the readout from the measurements I took without the keyboard, this is what I get with Aida64:
[image|1151836]
As far as measurements from the heatsink itself, this is what I get with an IR thermometer:
* Vent: 57.6-67.8c
* Rear vent: 60c
* CPU plate: 61.2-66.6c
* Heatpipe: 35.2-52.4c
I have also measured it with a thermalcouple and did some datalogging from my multimeter, and this is what I got:
Is there a way to troubleshoot the thermal issues without parts?
Metin:
I have a Lenovo T420 and the thermals of the computer are not exactly accurate. I am wondering if I can try anything before I buy new parts, since I'm closer to comfort then I want to be with the expected part costs to repair the entire system as it is. It would be nice if I could recalibrate the tempreature sensors, but I can't find a clear way to do it.
As of now, I have tried the following fixes:
-
* Heatsink removal (dusting)
-
* New TIM
+
* Heatsink removal (dusting purposes)
+
* New TIM (Artic MX-4)
Neither of these fixed it, so I took the keyboard off to get an average on how hot the heatsink measures vs. what the computer reports, and this is why the readout is highly suspect.
Before I mention the readout from the measurements I took without the keyboard, this is what I get with Aida64:
[image|1151836]
As far as measurements from the heatsink itself, this is what I get with an IR thermometer:
* Vent: 57.6-67.8c
* Rear vent: 60c
* CPU plate: 61.2-66.6c
* Heatpipe: 35.2-52.4c
I have also measured it with a thermalcouple and did some datalogging from my multimeter, and this is what I got:
Is there a way to troubleshoot the thermal issues without parts?
Metin:
I have a Lenovo T420 and the thermals of the computer are not exactly accurate. I am wondering if I can try anything before I buy new parts, since I'm closer to comfort then I want to be with the expected part costs to repair the entire system as it is. It would be nice if I could recalibrate the tempreature sensors, but I can't find a clear way to do it.
As of now, I have tried the following fixes:
* Heatsink removal (dusting)
* New TIM
Neither of these fixed it, so I took the keyboard off to get an average on how hot the heatsink measures vs. what the computer reports, and this is why the readout is highly suspect.
Before I mention the readout from the measurements I took without the keyboard, this is what I get with Aida64:
[image|1151836]
As far as measurements from the heatsink itself, this is what I get with an IR thermometer:
* Vent: 57.6-67.8c
* Rear vent: 60c
* CPU plate: 61.2-66.6c
* Heatpipe: 35.2-52.4c
I have also measured it with a thermalcouple and did some datalogging from my multimeter, and this is what I got:
CPU plate:
* 32-53c
[image|1151832]
Heatpipe area 1:
* 42-49c
[image|1151833]
Heatpipe area 2 (opposite side measurement)
* 42-48c
[image|1151834]
CPU vent:
* 52-55c
[image|1151835]