Mac Mini 2018 no power after memory upgrade
I have upgraded my mac mini 2018 to 16 gb memory and connect everything properly but no power (no led, no fan spin anything) and I put original memories back properly but still no power. The logic board seems fine.
What should I do?
If something happened such as power supply etc. does it repairable (warranty or not does not matter)?
Thank you for your helps.
Mac mini, macOS 10.15