When something breaks B1
An appliance packs in and you're trying to sort it.
work out B2 — develop successfullyA: How was your job interview?
B: It worked out better than I expected!
turn out — prove to beA: How was the movie?
B: It turned out to be really funny!
come across — find by chanceA: Where did you get that book?
B: I just came across it at a second-hand shop yesterday.
The boiler
Ali: I've been trying to get the boiler going but I can't work it out.
Sue: Did you check the pressure thingy?
Ali: It turned out to be just the timer, daft really.
Sue: Oh, thank goodness for that.
Lucky find
Sue: I came across the manual in the drawer, by the way.
Ali: Brilliant, that'll help no end.
Sue: Hopefully it'll all work out without us calling anyone.
Ali: Fingers crossed, eh.