Bad Power Connection

It appears that my connection between the mac mini and power source is poor. It effects my monitor. If I move the power supply the smallest move (sometime it seems just looking at it wrong) causes the power to the mini mac to stop. Has any one else had this happen? This is like our 10th mac and never had this problem. It also seems to take forever to correct. Thanks.

I am still having a problem with the connection between the mac and plug coming loose easily. Any ideas of why this is happening and what I can do to correct? As I am working, I will loose the connection. I have to unplug, plug it in again and then restart. Sometimes I have to do this several times.
Is there an issue with the Mac mini?

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