I am trying to describe the defect of my newly arrived electric kettle. There is a black spot in the liner, looks like a piece of the coating layer has fell off. What is the most simple and clear description? Can I say "there is a crack in the kettle liner"?
closed as too localized by FumbleFingers, Hellion, aedia λ, StoneyB, Mitch Jan 28 at 19:42
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You may rather say
There appears to be a crack in the kettle liner.
It appears, from your question, that you are unsure exactly what the problem is, but that you are certain that the kettle is defective. Providing additional description, as amanda suggested, would probably be helpful in your situation.
Make THEM own it. "There's a crack in your kettle liner." This is a common sales technique--make the problem theirs to solve.