Hi, and welcome to the forum! Have you tried unplugging it for a while and then plugging it back in? I had an older Pioneer that stopped powering on, and it took about two days of leaving it off and unplugged for it to come back to life. It's been so long that I don't recall, but it would only power on at first from the remote or the front button...I forget, but I think it was the remote. I don't know why it stopped powering on, or why it started again - but it worked perfectly after that until I replaced it a year or so later.
I'd say try unplugging it for about 30 minutes to start, and then overnight if that doesn't work - and try to power it on from both the front panel and the remote.
