The phrase "broke on" is often used to describe a situation where something fails or stops working. There are several synonyms for this phrase that can be used interchangeably. The word "failed" is commonly used to describe an action or object that has ceased to function properly. "Stopped working" is another synonymous phrase that can be used to describe an object that has stopped functioning. Other possible synonyms for "broke on" include "crashed," "went down," or "shut down." Ultimately, the specific synonym used will depend on the context of the situation being described, but each of these phrases can be used to convey the same general meaning.