A common problem I see during home inspections is called Reverse Polarity, or Hot Neutral Reverse. This means that the outlet is wired backward. It is a pretty simple fix and can be done in less than 10 minutes. Here is a link to my blog. https://www.morganinspectionservices....
For more explanation of why it's dangerous, see our other blog post here. https://www.morganinspectionservices....
**Note: this procedure will work for an individual outlet with reversed polarity. If you have several outlets in the same room or near each other that have reversed polarity, then the procedure is a little more complicated, and I will not address it here.
As always when dealing with electricity, ensure your power is off before working on the outlet!