What is cause of VERY faint broad vertical black and white bands?
I have a iMac Intel 20" EMC 2210 Early 2008 Core 2 Duo processor. I replaced the hard drive in the unit and everything seems to be fine, except I can see some VERY faint broad black and white vertical bands. I can't say that they were there before, because the unit was passed to me without a hard drive and therefore I couldn't really check it out. Could the HD replacement disturbed a screen connection and would possibly re-seating them help?