Well. This sounds like a board level issue for sure.
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[link|https://www.ifixit.com/Answers/View/728588/Kernel+Panic:+What+&+where+is+the+TP1A+sensor|TP1A|new_window=true] is the thermistor (thermal resistor, these are often used for temperature monitoring in electronics) for the rear camera. I am not 100% sure of the others. But I have some speculations based on the schematic. There are 3 other thermistors which are present on the board. One for the “Forehead” which is typically the front facing camera assembly. One for the “Radio” which is related to one of the cellular function chips. And one for the CPU. I am on my iPad so no access to board views. But according to the schematic, all these lines connect into the Power Management chip.
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[post|728588|TP1A|new_window=true] is the thermistor (thermal resistor, these are often used for temperature monitoring in electronics) for the rear camera. I am not 100% sure of the others. But I have some speculations based on the schematic. There are 3 other thermistors which are present on the board. One for the “Forehead” which is typically the front facing camera assembly. One for the “Radio” which is related to one of the cellular function chips. And one for the CPU. I am on my iPad so no access to board views. But according to the schematic, all these lines connect into the Power Management chip.
They also all connect to electrical ground on their return line. So I’m wondering if there’s a short to ground somewhere in this net. Pictures of the board itself ''might'' be helpful, but I know the vast majority of this board is covered in shields, so it can be hard to get a good look at anything. I will have a look at the boardview for this when I get home.
Well. This sounds like a board level issue for sure.
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TP1A is the thermistor (thermal resistor, these are often used for temperature monitoring in electronics) for the rear camera. I am not 100% sure of the others. But I have some speculations based on the schematic. There are 3 other thermistors which are present on the board. One for the “Forehead” which is typically the front facing camera assembly. One for the “Radio” which is related to one of the cellular function chips. And one for the CPU. I am on my iPad so no access to board views. But according to the schematic, all these lines connect into the Power Management chip.
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[link|https://www.ifixit.com/Answers/View/728588/Kernel+Panic:+What+&+where+is+the+TP1A+sensor|TP1A|new_window=true] is the thermistor (thermal resistor, these are often used for temperature monitoring in electronics) for the rear camera. I am not 100% sure of the others. But I have some speculations based on the schematic. There are 3 other thermistors which are present on the board. One for the “Forehead” which is typically the front facing camera assembly. One for the “Radio” which is related to one of the cellular function chips. And one for the CPU. I am on my iPad so no access to board views. But according to the schematic, all these lines connect into the Power Management chip.
They also all connect to electrical ground on their return line. So I’m wondering if there’s a short to ground somewhere in this net. Pictures of the board itself ''might'' be helpful, but I know the vast majority of this board is covered in shields, so it can be hard to get a good look at anything. I will have a look at the boardview for this when I get home.
Well. This sounds like a board level issue for sure.
TP1A is the thermistor (thermal resistor, these are often used for temperature monitoring in electronics) for the rear camera. I am not 100% sure of the others. But I have some speculations based on the schematic. There are 3 other thermistors which are present on the board. One for the “Forehead” which is typically the front facing camera assembly. One for the “Radio” which is related to one of the cellular function chips. And one for the CPU. I am on my iPad so no access to board views. But according to the schematic, all these lines connect into the Power Management chip.
They also all connect to electrical ground on their return line. So I’m wondering if there’s a short to ground somewhere in this net. Pictures of the board itself ''might'' be helpful, but I know the vast majority of this board is covered in shields, so it can be hard to get a good look at anything. I will have a look at the boardview for this when I get home.
[image|2743155]