Shark Steam Mop: Won't steam through the mop head. If you remove the mop attachment, it steams like crazy out of the end of base unit. When you re-attach mop head, all steaming stops. Is there a clog somewhere in the hose?

SOURCE: Shark Steam Mop - Gray/ Purple Vacuum: shark steam mop has water, but there is no steam....

I tried running vinegar through as you would a coffee pot to get rid of hard water scales. This did not work. Then I noticed that the light behind the shark decal on the front of the machine was going off and on. And sure enough as I moved the cord around the light would come off and on. Looking closer I could see the the heat had melted thru some of the cord.I bought mine at Target before xmas last year, throwing away the sales slip after several months so I guess there is nothing I can do about it.