Re Uh8060S new unit cannot move off channel 80 nothing in manual explains. Can you help?

Here is a link to the user manual. https://www.uniden.com.au/RESOURCES_MAIN/pdfs/UH_8060S_OM.pdf

read the user manual
check that you have the correct antenna for your area
talk with the technicians where you bought the unit
contact the manufacturer on a contact them phone number and discuss the problem with their technicians

Progressive scan has nothing to do with your tuning, it refers to the scan lines in laying the picture on the screen...ie. progressive scan versus interlaced scan.
to program TV channels you will need to go into the menu to do that either automatically or manually. If you have a cable or satelite box connected to unit, that may explain why it programs to only ch 3.
If using cable or satelite box I highly recommend use of Either HDMI cable or composite cables.

It's possible that it might be a fault on the unit. One or more of the output devices could have a thermal problem. However at 80 watts it might be driving the amp a bit too hard, maximum for it seems to be between 75 and 110. Are all channels capable of delivering the 80 that is the question? If one is capable of only 75, then the answer will be that channel is the one overheating.
If that is the case you would be better with an AVR that can deliver 100 watts on all channels. As for the choice go for what you can afford and look at the customer reviews closely. They are the best guide to a decent bit of kit.

Great to hear you have resolved the issue, Jason.

Cheers,
Peter

Try manual tuning on that particular channel. if the transmission signal is week nothing can be done by the user.

Here is a link to the user manual: http://www.123radios.com/Manuals/AXSeriesManual.pdf. Programming is explained on page 2.

Take It To A Repair Shop And Let Them Put In A Security Code Or Look Through The Manual

I would suggest to do an autoprogram again and see it that helps.