The short answer
A Black+Decker refrigerator showing this usually tells you one thing: a click every few minutes with no running sound is the overload protector, and that is a fault rather than a noise. This one leaves the noise page quickly: it belongs with the start-circuit checks and it ends at a technician.
What you actually see
- A rattle that comes and goes with the compressor — It starts when the compressor starts and stops when it stops, which places it at the back of the cabinet rather than inside it.
- A buzz that rises and falls — A tone that changes pitch is almost always a fan blade touching something, not an electrical noise.
- A grinding or scraping from the freezer section — Ice touching a fan blade makes a sound that changes as the blade cuts into it.
Causes, ranked for this refrigerator
- Normal refrigerant and defrost sounds — The usual answer. gurgling, trickling and the occasional pop are the sealed system equalising and water hitting a warm surface, and they are correct behaviour. Rule it in or out properly here; a maybe at this position costs an hour further down.
- Condenser fan blade fouled or worn — The runner-up. it runs whenever the compressor runs, which is why the noise seems to follow the compressor and gets blamed on it. Getting a definite answer here is worth more than a quick look at the three below it.
- Cabinet not level or resting on three feet — Third. a light compact cabinet on adjustable feet will rock on any floor that is not flat, and every compressor cycle becomes a rattle through the case. If this is the answer, the rest of the list stops mattering entirely.
What to check, in order
- First — nothing — this one is confirmed by listening — Ask whether the sound is new or newly noticed. A unit moved into a quieter room has not changed; the room has.
- Second — the condenser fan — Unplug the unit and turn the blade by hand. Grit, a wobble or a dragging point tells you what you are hearing.
Checks an owner can do safely
- Step 1. Turn the condenser fan by hand — With the unit unplugged, spin the fan blade. It should turn freely and evenly. Grit, drag or a wobble is the noise you are chasing.
Tools: flashlightAbout 10 min
- Step 2. Look for ice at the evaporator fan — Empty the freezer section and inspect the inner rear panel. Ice reaching the fan opening explains a grinding sound that stops when the door opens.
Tools: flashlightAbout 15 min
- Step 3. Identify when the noise happens — Stand by the unit and note whether the sound starts with the compressor, runs all the time, or arrives on a schedule. That single observation removes most of the list.
Tools: noneAbout 10 min
Before you open anything
Safety
Isolate first, inspect second. Pull the plug or open the breaker, then wait before touching anything behind a panel — a capacitor can hold a charge after the power is off. Put the plug somewhere visible so nobody restores power while your hands are inside.
When this becomes a service call
The line is not about confidence, it is about what the next step needs. If levelling, clearing and reseating change nothing and the sound tracks the compressor exactly, the next step needs the machine running with panels off, which is not an owner task.
Sources
General guidance- The Control of Hazardous Energy (Lockout/Tagout) — OSHA 1910.147 and manufacturer service manuals, fetched
Nearest pages
What this page does not cover
Treat what follows as the class-level answer for a Black+Decker refrigerator. It will not tell you which board your unit has, which part number fits it, or what a particular code means on a particular family, because those differ within the range. The family and model pages beneath this one carry that, and they are linked under Related pages.
Related pages
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