monitor ghosting 753s

Hello there!, i am doing a review of existing computer equipment and noticed we have two monitors Samsung 753s syncmasters that are exhibiting ghosting badly. I thought it might have been the unshielded speakers next to the guns, but no change when I removed them. I tried a deguass several times but no improvement. They seem to be perfectly good monitors apart from this problem, which when typing black on white (like in Word ) it looks bad and causes eye strain using it. I checked the group messages already and noted , the comment on unterminated cable, and lost pin 10 ground (which I see would cause probs) but both are proper cables that are 'built in' to the monitor, and direct to PCI video VGA adapters. Any ideas? thanks Jeremusic