XPS 15 7590 Power Cord Problems

Hi. I have an XPS 15 7590 that's about 4 years old. It's out of warranty, which cannot be extended.

When the laptop is plugged in, I have to reposition/place the power cord in some specific angle to get the computer to acknowledge that it's plugged in and start charging. If the cord moves slightly, then it often will show that the laptop has been unplugged.

Just before the laptop went out of warranty, I had a new power adapter sent to me, so I don't think it's the power adapter.

The laptop works fine otherwise, and I'd like to continue to use it as a backup laptop, but this power cord issue is a problem. Is there a cheap way to fix this?

Thanks for your help.