Picade 10 inch screen - inverted colours

Hi, I just purchased the 10 inch upgrade for an old style picade and have the following strange behaviour:
After powering on the screen the screen colours are inverted
After 10 minutes or so the regular colours start to slowly creep in from the border
After about an hour the colours are correct but the middle of the screen is white/washed out, a fair amount of persistent ghosting can be seen (looks like screen burn)
After about 2 hours the screen looks great!
I’ve tried several power supplies and reseated the cables a few times with no effect.
Any tips to get this working or do I need to seek a replacement?

At screen power on