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Model A1418 / Late 2012 / 2.7 & 2.9 GHz Core i5 or 3.1 GHz Core i7 Processor

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Sensor error Tp2H, heatpipe, power supply

Hey all,

I've got an iMac late 2012 and to date it worked without any problems.

But after having updated to High Sierra, more and more problems appeared.

The system became slower and unresponsive. Today it reached the climax.

The screen turned black several times in a row, as if it would hibernate.

I started the Apple Hardware Test and it gave me this:

4SNS/1 /40000000 Tp2H-127.875

This means, that the powery supply / heatpipe reached a level of 127°C.

But I'm pretty sure that the sensor is just broken. I bet the system would blow up, if the temperature was real.

Now the question is, can this be easily fixed or does that mean the whole LogicBoard needs to be replaced? And is this worth it ($$$)?

Cheers,

Stephan

Отвечено! View the answer У меня та же проблема

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Выбранное решение

@stevie_

Sensor

Tp2h

Description

AC/DC T2 Sec heatsink temp

Part Location

Built into power supply

Suggested Action

Check power supply cable connections to logic board; test with known-good logic board; test with known-good power supply. Check for clogged fans and/or vents; check cable connections to logic board.

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Well that sounds (worst case) like either the Logicboard or the Power Supply needs to be replaced.

Does anyone know what such a repair will cost?

by

Here's the IFIXIT power supply: iMac Intel 21.5" (Late 2012-Late 2015) Power Supply as the sensor is on the power supply you have a good chance thats the likely part that will need to be replaced.

by

Very cool, thanks! Didn't know that the sensor is located on the PSU itself.

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Stephan Römer будет вечно благодарен.
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