Overtemp Red LED comes on. What part of the system does in monitor?

[Hawkeye411]

The OVERTEMP red LED keeps lighting up on the system board of my Power Mac G5 2.3GHz. Obviously something is overheating. I called Apple Support and he asked my how long it has been since I turned off my Power Mac. I told him its been 2 years (since I bought it). He said that I need to turn it off once in a while for some time. I use it to serve files so I can't turn it off. Sounds kind of ridiculous if you ask me.

He said that if it continues to happen I need to take it in for servicing because a fan could be broken, etc.

I am wondering, does anyone know what part of the system that the OVERTEMP led is related to? I asked the Apple care guy and he said that it was the memory. The LED is located next to the top memory bay along with 4 or 5 other warning LED's (e.g. CPU A, . I'm not convinced that it is related to the memory temperature though. So I thought I would ask all of you knowledgeable Mac owners if you know what the OVERTEMP LED is monitoring?

Cheers.

 

[Manzana]

you could download something like istat pro

also, it doesn't make sense that he told you to shut it down once in a while, that's dumb.

 

[krye]

Does anyone know if the Jan Mac Pros are the same? I think I've noticed a red light shining out the back onto the wall late at night when I have the living room light off. Is that normal, or a sign that it is overheating?

 

[Hawkeye411]

Here is the iStat info.

 

[FireSlash]

Here is the iStat info.

We can't see images linked from your LAN. Upload it to photobucket or a similar service. (Or attach it)

 

[Hawkeye411]

DOH!!!

How about this.

 

[Rankrotten]

I had this occurring in my Mac Pro:

https://forums.macrumors.com/posts/5189682/

My problem occurred when the PSU could not supply enough power to my graphic cards using a molex splitter cable from the optical bay. I recabled using the spare PCIe connectors on the motherboard and all was ok.

Your PSU could be on the way out.