The answer to 'shut-off valve clogged' is that a clogged shut-off valve is a common plumbing issue that can be caused by mineral buildup, debris, or a mechanical problem with the valve itself. Symptoms include difficulty turning the valve or water not shutting off completely. Solutions may involve cleaning the valve, replacing washers or seals, or in some cases, replacing the entire valve.
In many cases, a clogged shut-off valve can be fixed with some basic DIY plumbing skills. However, if the valve is severely corroded, stuck, or the issue persists after trying basic fixes, it's best to call a professional plumber to diagnose and repair the problem properly.