Nobody loses dinner to a dead ice maker, but a peninsula summer without ice is its own small misery. They are modular, testable end to end, and — read properly instead of module-swapped on faith — almost always a one-visit repair.
The visit follows the water from the shutoff to the bin — valve, fill line, filter date, module, and one full harvest watched start to finish. On well supplies the path collects minerals early; on municipal water it collects neglect — a filter three years past its date. Both get found by watching a cycle rather than guessing at a part.

Frozen fill tubes, mineral-crusted valves and geriatric filters cause most quiet ice makers on the peninsula; the module itself is guilty less often than the internet believes. Neil tests the valve under pressure, checks the tube with a light, and watches a harvest before any part is named.
Standalone and under-counter ice machines — common in harbor boathouses and island entertaining kitchens — get their own routine: condenser, water pump, evaporator plate and the sensor that tells the unit the bin is full. Salt air on the waterfront is unkind to their condensers, and a cleaning is often the repair.
Taste complaints are water-path complaints: an exhausted filter, a stale tank, or well minerals. A fresh filter and two or three batches tipped down the sink settle most of them; anything that persists gets the reservoir and tubing opened up.
Model number welcome, plain words fine. Neil calls back with a window.
Nine times out of ten that is an overdue filter or water sitting stale in the line. Swap the filter, throw away the next couple of batches, and if the taste survives that, the tank and tubing get a proper look.
Ambient stress on a marginal freezer or a valve that is barely making pressure. Both get measured; the summer-only pattern actually narrows the diagnosis.
Rarely. The fill valve, the tube or the filter is at fault far more often than the assembly itself, and each of those is cheaper. Watching a harvest cycle first is what keeps the expensive part on the shelf.