I have a epson cx6400 printer. well I finally got the heads cleaned out one day and starting printing invitations to my kids bday party. half way thru the first one, the power in the house went out. ever since then I havent been able to get it to print right. it would print streaky, blotchy or not at all. I put a brand new black cartridge in to see if it'll work before i waste $$$ replacing the color. well the black doesnt print at all now. I read a few place online and alot of other ppl are having similar problems and it could be the head went bad or a vacuum problem. anyone else have any ideas?