All in the Family - Season 9 Episode 8

With the TV broken, Edith decides to buy a new one for Archie for their 30th wedding anniversary. But when the clerk won't let Edith buy a TV without Archie's signature because she's a woman, she goes to the bank for a loan. There too, she can not borrow money because she is just a housewife with no job, making Edith furious. Helpless, Edith goes home and asks Archie for $500, but she won't tell him why (surprise). During their conversation, Edith discovers that Archie may be sexist also.