I am having image retention problems. Also the left side and right side of the screen are different shades of black when there are dark colors. Also horizontal lines appears on much of the left side of the screen at times. Do i have a bad unit. Is there a fix?
Let’s try to rule out all possibilities.
Do you mind sharing, if you can, a picture of what exactly it looks like on the monitor?
For image retention, I recommend checking this post out. It might help you with your issue. I don’t think burn-in is an issue with Spectrum since it uses IPS panel.
Also, have you checked your cable connection, to see if it is properly plugged in? or have you tried using a different cable/connection to see if the problem still persists?