Or omission. I read http://pdf.crse.com/manuals/4488970213.pdf and found it would power down but was unclear to outright missing how it would/could auto power up.
https://esupport.sony.com/US/p/model-home.pl?mdl=SACT770&template_id=1®ion_id=1&tab=download#/downloadTab did not offer any updated firmware so at this point I can't write "it does this."
Call the maker and seller to confirm. If it does not do that, and they can't fix it, return it and start shopping.
I have a 65 inch Sony TV with a Sony sound bar (model # SA-CT770). I connected the sound bar a instructed (HDMI with optical connection). When I first turn on the TV the sound bar does not turn on. However, when I turn off the TV and then turn the TV back on, the sound bar turns on. How can I get the sound bar to turn on the first time I turn on the TV?