High temperature issue on Fin V1.1.

Hi,

I was using same Fin board for the last 5 months with Raspbian with no issues. Today when starting it up, I noticed the thermometer which indicates the high temp of CPU after only 1 minute of running and without starting any script. After the second minute, the red thermometer goes fully up and indicated temperature is 102 degrees Celsius.

2020-02-24_1016

What do you recommend me to do?

Thanks

Hello, That does indeed seem very unusual. For first steps:

  • Could you please confirm the temperature with the following (in host os) : cat /sys/class/thermal/thermal_zone0/temp
  • Could you also run top/htop etc. to confirm that there are no processes running with very high CPU demand.
    Thank you

Hi @srlowe,

Thanks for the fast response. I have attached some print screens:

Thanks for the extra info confirming the situation. I’ll discuss this with my colleagues and get back to you shortly.

Here are some other suggestions. Apologies if some are obvious, but better to be thorough!

  • Has an enclosure been added to the device recently?
  • Could you check that nothing has got inside the enclosure that may be hindering airflow?
  • Do you know the approx ambient temperature where the device is located?
  • Are you able to confirm that the device is actually hot? (to rule out sensor fault)

Another line of thought is Raspbian (e.g. perhaps this is related to a recent update). Is there any way that you are able to temporarily boot into a different OS? (e.g. balenaOS)

  • Has an enclosure been added to the device recently?
  • Nope. It has been in the same enclosure all the time. The enclosure is the original one which Fin comes with. Moreover, I have not placed the top lid.
  • Could you check that nothing has got inside the enclosure that may be hindering airflow?
  • Nothing has got inside for sure. It was working perfectly last time.
  • Do you know the approx ambient temperature where the device is located?
  • 10-20 degrees Celsius
  • Are you able to confirm that the device is actually hot? (to rule out sensor fault)
  • Yes, the device gets hot. Especially the Broadcom chip from CM3

Another line of thought is Raspbian (e.g. perhaps this is related to a recent update). Is there any way that you are able to temporarily boot into a different OS? (e.g. balenaOS)

  • I can’t boot since I only have raspian but could flash balenaOS on it. I am afraid keeping it running for such long time (as long as the flashing lasts), will burn it completely.

With the basic troubleshooting out of the way, it certainly seems possible that something has happened to the board and we are happy to swap it for a new one. Be on the lookout for an RMA form to your email address, and can you please also include the Compute Module with the return, so that we can investigate which part may have failed. Thanks!

Hi @dtischler,

Sounds great!

Thanks!