Won't power up.
I have a mac mini late 2018 A1993. It was working fine since I bought it about 4 years ago. Few months ago suddenly shut it down and won't power up anymore, no sound, now fan. Suspecting a faulty psu I replaced it with a new one with same result.
Can anyone please advise what will be the next step to get it fixed.
Thank you in advance for any advice