Mac Pro 4.1 Error 4SNS/1/40000000: TN0D-127.739! (MCP Digital)!

[leucomax]

Hello community!
Got a MacPro 4.1 which shows in the Apple hardware test the following error:

4SNS/1/40000000: TN0D-127.739 !!! (MCP Digital) !!!

Anybody who knows who to fix the problem? is it fixable by someone with good skills (me;-)

Thanks

Wolfgang

 

[ScottishCaptain]

Hello community!
Got a MacPro 4.1 which shows in the Apple hardware test the following error:

4SNS/1/40000000: TN0D-127.739 !!! (MCP Digital) !!!

Anybody who knows who to fix the problem? is it fixable by someone with good skills (me;-)

Thanks

Wolfgang

TN0D is the temperature diode on the IOH controller. This is the chipset located on your CPU board (dual or single). You can check the thermal sensor cable (it's a two pin connector, has a black cable that snakes in/under the heatsink) and/or reseat it, but if that doesn't fix the problem then the controller chipset is probably on it's way out and you'd have to replace the entire CPU daugtercard.

-SC

 

[leucomax]

Thanks for you fast reply!

That´s what I suspected :-( Any idea to get a cheap dual-cpu board?

Thanks

Wolfgang

 

[mikeboss]

vielleicht halb so wild

the plastic clip holding the heatsink in place may have been broken. see these threads ->

https://forums.macrumors.com/threads/1637891/
https://forums.macrumors.com/threads/1683273/

 

[leucomax]

@mikeboss: Dankeschön ;-)

Thanks a lot - will check on weekend - hopefully I´ll find some minutes ;-))

Wolfgang

 

[leucomax]

Although it took much more than 1 weekend ;-)

I´m glad to tell you that the problem is solved!
Just a simple plastic clip.

But ... I´ve another question.

Anyone who knows where to get the plug which connects the bluetooth-module to the logic board?

Got a new 4.0 BT + 802.11AC module - but it needs extra power on 4.1 and 5.1 Mac´s - the 3.1 is simple plug-and-play. Works flawless in mine.

Thanks in advance

Wolfgang