My yellow warning light will not go out after i have inserted my new dry cleaning head cartridge. The cleaning cartridge only seems to engage for a second or two then comes back out. the first thing i did was switched out the tape drive, i thought the problem was solved, but after 2 days, the light is back on, the cleaner does not run all the way through. i have purchase another cleaning cartridge in case i received a defective one, but that is a long long shot i suppose. Does anyone have a suggestion of what i should do next. thank you, steve.