Gents - regular old Mr. Coffee 12 cup coffeemaker stopped delivering water to the gounds like it was stopped up. Wife said buy a new one - I like to tinker.

Removed the bottom and the two rubber feed hoses. Saw no impediment; all looked clear. Then noticed something in the middle of one hose. Pushed it out and it looks like a white plastic valve which might be stuck. Fiddled with it a bit and pushed it back in. Put the hoses back in and tried it out.

Worked perfectly. Good flow of hot water into the grounds.

So do not throw it put; just take a look inside and you may find the problem.