In Korean, to say "something is broken", you use the past form of the verb 고장나다.

> 
> 텔레비전이 고장났어요.
> 
> 
> 

But now I wonder how to say "something got broken", meaning the malfunction happened in the past. Is it fine to say 텔레비전이 고장났었어요?

Adding "It got broken" and "It's broken" to the Google translate returned the same thing - 고장났어.

At least I understand some verbs such as 못생겼어요 is used in the past form to mean the present tense. But then how do you differentiate it from the pure past tense usage?