I'm experiencing an issue where temp3 on the avalon unit always shows a value of 0.

I believe this is the sensor that is affixed to one of the module heatsinks in some thermal paste of some sort.

I traced this back to its connection on the board, it appeared to be seated correctly.  I unplugged it and re-seated it, with no success.

Any suggestions?  I am afraid to keep it running, as the fan speed stays very low and I do not think it is providing adequate cooling due to low temp3 sensor value.

Thanks.