Sid Station power and flickering LCD

I recently received a Sid Station and noticed that the LCD will flicker and the unit will occasionally reboot itself. If the power cord is not touched it may be more steady and not reboot, but the LCD will still occasionally flicker?

The previous owner told me to not insert the power cord all the way in and that this is a known issue, but I don’t ever recall reading or hearing anything about this. Is this a known issue and has anyone else had the same problem?

Thanks for any help!