Hi Yendor,
It looks like you already performed most of the troubleshooting for a no power issue. The link below will show you the complete steps on how to deal with this issue. Please check if there is something that you miss out. https://us.en.kb.sony.com/app/answers/detail/a_id/35540
If you have completed all of the steps and the issue is not resolved then service is needed.
Regards,
Jen
Answered your question? Glad I could help! Please Click the "Accept as Solution" button below.