Quick answer
Ремо́нт is both a repair and a full renovation. “It broke” is слома́лся / слома́лась and agrees with the thing.
Tools
What is wrong
Who fixes it
Calling someone out
Ремо́нт on a door
A sign saying Закры́то на ремо́нт can mean closed for two hours or for a year. And a neighbour announcing У нас ремо́нт is warning you about months of drilling, not a quick fix.
Typical mistakes
Маши́на слома́лся.
Маши́на слома́лась.
The past agrees with the thing: маши́на is feminine.
мой дрель
моя́ дрель
дрель ends in -ь and is feminine.
Check yourself
Стира́льная маши́на ___. — The washing machine broke.