Hey @mellimac, that's certainly not what you want for you. By any chance was your Fetch set top box connected via the Ethernet cable provided? Generally speaking, an Ethernet connection almost always provides both a stronger and more reliable service removing the hardware's need to use Wi-Fi,
Just in case you have not done so already as well, if you could try doing a Soft Reset that would be much appreciated.
Should you continue to have issues, I would recommend having a chat to our Messenger teams whom will be able to look into your services and advise further. Our teams are available 24/7 via the Optus App
We appreciate you resetting your set-top box and speaking with the Technical Support Crew, @mellimac. Sorry for the frustration caused. To prevent overheating please ensure that there is sufficient airflow (about 5cm) around to Fetch box and check that nothing is blocking the ventilation slots or that it is not tightly packed in with other electrical devices or exposed to direct sunlight/other sources of heat.
I would suggest unplugging your Fetch box completely again and leaving it for 30 minutes at least to cool. If it overheats again (despite ventilation and airflow), I suspect that it may indicate a hardware fault. In this case, please reach out to our 24/7 Messaging Team and we can arrange for a replacement to be sent out to you.
In regards to your Free To Air issues, we have a step-by-step troubleshooting guide I would suggest checking that the channels have not been hidden and that you re-scan the channels once or twice more.
You can retune all free-to-air channels by going to Main Menu > Manage > Settings > Channels.
If issues persist, our Technical Support Team is ready to assist via the My Optus App. Good luck!
"By any chance was your Fetch set top box connected via the Ethernet cable provided?"
Can I suggest you stop giving this generic advice? Ethernet cabling has nothing to do with over heating or FTA reception. Its great to want to help but not when you don't understanding the issue yourself.