Here's what I know. Our kitchen sink used to work fine, then one day the water flow was suddenly really low, like just slightly better than a trickle. We called our landlord about it, and so he came by one day while I was at work and fixed it. My wife says he basically went under the sink, did something, and the problem was resolved in a matter of minutes.
Unfortunately the problem has come back. Knowing that it's supposedly very easy to fix, I'm trying to figure out how to do it myself; but I've looked under the sink and the only thing I can really imagine he did was something involving these knobs:
However, for the life of me I can't seem to turn either knob in either direction. I've tried loosening the screws, but those just seem to hold the knobs on (as I'd expect, but you can never be too sure).
Obviously I don't know
much anything about how sinks work, or else I wouldn't be posting here. I'm hoping somebody knows exactly what's wrong and can tell me what obvious thing I'm missing.
If it's just that the knobs need to be turned... any idea why they'd be basically impossible to turn? Does something else need to be adjusted first?