Question Qualcomm chipsets thermal pad

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hey there, gonna buy a second hand modem which has Qualcomm chipsets and a medium sized heat sink, the problem is im not sure whether the paste on chipsets is still alive. from a video he has uploaded, you can see that weird blue paste.
View: https://www.youtube.com/watch?v=zoW6dCgkL8c&t=342s

whitin 4:01 to about 5:50 you can see the condition (sorry couldnt upload images)
do i have to be worried about it? and do i need to change it to thermal pad?
 
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hey there, gonna buy a second hand modem which has Qualcomm chipsets and a medium sized heat sink, the problem is im not sure whether the paste on chipsets is still alive. from a video he has uploaded, you can see that weird blue paste.
View: https://www.youtube.com/watch?v=zoW6dCgkL8c&t=342s

whitin 4:01 to about 5:50 you can see the condition (sorry couldnt upload images)
do i have to worry about it? and do i need to change it to thermal pad?
Looks OK but if heat sink was removed new paste should be applied anyway, weather it's dead or alive.
 
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