F5F Stay Refreshed Hardware Desktop Spots of burning on laptop thermal paste indicate overheating or poor application.

Spots of burning on laptop thermal paste indicate overheating or poor application.

Spots of burning on laptop thermal paste indicate overheating or poor application.

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harrypotter99
Junior Member
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4
10-23-2020, 04:14 AM
#1
Hello, I'm working on restoring my Lenovo Legion 5 17 after taking it apart. While reapplying thermal paste, I'm noticing high temperatures and burn marks forming on the surface. I suspect these are trapped air bubbles. I've tried spreading the paste multiple times and applying small dots, but the results remain the same. The paste I'm using is Thermal Grizzly Aeronaut. Later today I'll be able to purchase PTM material, which could be useful now. Any tips would be greatly appreciated at this stage.
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harrypotter99
10-23-2020, 04:14 AM #1

Hello, I'm working on restoring my Lenovo Legion 5 17 after taking it apart. While reapplying thermal paste, I'm noticing high temperatures and burn marks forming on the surface. I suspect these are trapped air bubbles. I've tried spreading the paste multiple times and applying small dots, but the results remain the same. The paste I'm using is Thermal Grizzly Aeronaut. Later today I'll be able to purchase PTM material, which could be useful now. Any tips would be greatly appreciated at this stage.

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Bulr3
Junior Member
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5
10-23-2020, 06:42 AM
#2
avoid scorching marks, focus on elevated areas of the central die and cooler.
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Bulr3
10-23-2020, 06:42 AM #2

avoid scorching marks, focus on elevated areas of the central die and cooler.

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TheJoeyMC
Junior Member
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21
10-23-2020, 01:23 PM
#3
They appear as dark marks that leave behind a sticky film.
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TheJoeyMC
10-23-2020, 01:23 PM #3

They appear as dark marks that leave behind a sticky film.

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senne632
Member
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123
10-25-2020, 06:29 AM
#4
I'm conducting a brief 15-second thermal test on the CPU to evaluate cooler performance, ensuring proper heat dissipation. Temperatures range from 90-100°C during testing, and the die temperature remains low despite the high heat.
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senne632
10-25-2020, 06:29 AM #4

I'm conducting a brief 15-second thermal test on the CPU to evaluate cooler performance, ensuring proper heat dissipation. Temperatures range from 90-100°C during testing, and the die temperature remains low despite the high heat.

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TommyTheLommy
Posting Freak
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846
10-26-2020, 05:14 PM
#5
The same scorch mark appears on the vapor chamber side.
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TommyTheLommy
10-26-2020, 05:14 PM #5

The same scorch mark appears on the vapor chamber side.

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brannocb
Junior Member
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18
11-01-2020, 06:31 AM
#6
What paste is this? Looks like it is contaminated and expired
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brannocb
11-01-2020, 06:31 AM #6

What paste is this? Looks like it is contaminated and expired

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heroboy17
Senior Member
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528
11-01-2020, 10:23 PM
#7
TPM pads on the CPU and GPU made a difference. Temperatures stayed steady around 65°C for the 2060, and between 70-85°C for the CPU. I'll keep an eye on it for any issues, but it appears to have resolved the problem.
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heroboy17
11-01-2020, 10:23 PM #7

TPM pads on the CPU and GPU made a difference. Temperatures stayed steady around 65°C for the 2060, and between 70-85°C for the CPU. I'll keep an eye on it for any issues, but it appears to have resolved the problem.

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HaiassZ
Junior Member
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46
11-02-2020, 12:06 AM
#8
It shouldn't be feasible for the CPU heat spreader or heat sink to reach temperatures that cause burn marks, especially without damaging the socket or surrounding materials. This suggests a possible electric arc between the heat sink and the CPU. I'm very worried about safety and would advise stopping use immediately. The best course of action is to take the device to a repair shop for a thorough inspection. This situation isn't typical from static electricity but rather from power issues affecting the heat sink and CPU connection. Good luck with the repair!
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HaiassZ
11-02-2020, 12:06 AM #8

It shouldn't be feasible for the CPU heat spreader or heat sink to reach temperatures that cause burn marks, especially without damaging the socket or surrounding materials. This suggests a possible electric arc between the heat sink and the CPU. I'm very worried about safety and would advise stopping use immediately. The best course of action is to take the device to a repair shop for a thorough inspection. This situation isn't typical from static electricity but rather from power issues affecting the heat sink and CPU connection. Good luck with the repair!

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