If you told us what the issue was, we could probably help you better.

A cheap fine tooth comb, stool and an hour can fix a lot of bent fins on a condensor. Typically a condensor doesn't go bad, it'll have bent fins or leak. That's the most that typically occurs.

A clogged orifice tube can cause poor performance.

The evaporator core (in dash) usually doesn't cause any issues either)