Ga door naar hoofdinhoud

Mid 2010 Model A1278 / 2.4 or 2.66 GHz Core 2 Duo processor

794 Vragen Bekijk alle

Replace TS0P (Palm rest temp sensor) or disable it

I'm certain that my Palm rest temp sensor (aka TS0P) is faulty as I can see the reading from iStats as -128, which fires up the fan speed to max and kill CPU power and Wi-Fi

  • Question is: Is there a way to tell the mac to ignore these readings or replace it?

According to what I read; this sensor is in the cable of the trackpad. Can you confirm this is the case?

Beantwoord! Bekijk het antwoord Dit probleem heb ik ook

Is dit een goede vraag?

Score 1
1 Opmerking

note: I've tried to unplug the whole trackpad, same thing. the temp is still -128

door

Voeg een opmerking toe

4 Antwoorden

Gekozen oplossing

Guys I solved the problem!

It was !&&* of a 8 months of searching and debugging. I wrote a post about it here: https://addaxsoft.com/blog/dyi/fixing-fa...

Was dit antwoord nuttig?

Score 1

2 opmerkingen:

Hello, I really need to check you solution but the website doesn not work. Can you reply? Thank you!!

door

Here the same.

Looking ways to disable the trackpad temp sensor.

door

Voeg een opmerking toe
Het nuttigste antwoord

Replace the trackpad cable (usually people sell the cable with the trackpad, not the cable on it's own).

If there is an issue with the cable, or the MacBook doesn't detect a trackpad plugged in, the fans will spin up since it has no reading from the sensor.

Was dit antwoord nuttig?

Score 2

2 opmerkingen:

actually I found the cable only on aliexpress for 10 buks, but it wasn't the one causing this issue!

door

So what was the issue?

And did You ever managed to bybass the sensor?

door

Voeg een opmerking toe

Try to unplug the webcam, wifi, Bluetooth and trackpad cable and see if that makes the temp go down,

Was dit antwoord nuttig?

Score 1

3 opmerkingen:

it gave the same crazy reading of -128 when I unplug it!

door

check resistor R5270 and R5271, 1k ohms each one, if is not 1k replaced. You can check with Volts it should be 3.3v on both sides of each resistors.

door

sorry for a question: on one end of the R5271 I don't have 3.3V but 0V how can I go back to the solution? The resistance is 1K but from the side towards the U4900. Thank you very much

door

Voeg een opmerking toe

for those that removing TRACKPAD FLEX from connector (J5800) and the issue is still there, remove CAMERA FLEX too, the SMBUS_SMC_A_S3_SDA goes to camera connector (j3402) pin 4 and SMBUS_SMC_A_S3_SCL pin 5.

Was dit antwoord nuttig?

Score 1

1 Opmerking:

I know this is old but wanted to comment incase someone else stuck with this issue in 2023.

This fixed it for me. The camera cable was the issue.

I opened my MacBook Pro 13" 2011 model for cleaning and I snapped the camera cable. I forgot to remove the cable head from the socket, and reassembled the device, and notice that it is running very slow. The cpu was throttled to 0.7ghz. Couldn't even boot the os to home screen.

I was about to give up when I found this post, and this comment, amd remembered that I left the cut camera cable in the socket. When I removed it everything went back to normal.

Thank you.

door

Voeg een opmerking toe

Voeg je antwoord toe

AKZ zal eeuwig dankbaar zijn.
Weergavestatistieken:

Afgelopen 24 uren: 1

Afgelopen 7 dagen: 7

Afgelopen 30 dagen: 26

Altijd: 6,507