Xbox One S - No Power

Hi, was playing a game on Xbox One S and suddenly the video got stuck. I could only hear Audio. That also stopped after few seconds. Then I pressed the power button but it kept blinking and did not fully turn off.

So I removed power and plugged it back on. Since then it does not start. No chime / no white light. I tested the power block and all 3 + has 12V.

Any suggestions / advice on what to check next?