The short answer
Owners of this freezer land here for one reason, and a buzz that changes pitch is contact between two parts, and contact is found by hand rather than with a tool. This is owner work almost every time; the exception is a fan or a compressor whose bearing has worn rather than picked up debris.
What you actually see
- A buzz that changes pitch — A varying tone is mechanical contact, not an electrical hum.
- Gurgling or trickling after the compressor stops — Fluid sounds while the system equalises are normal on every unit.
- A hum transmitted through the floor — Vibration in a floor is a coupling problem rather than a machine fault.
- A high whine that never varies — A constant whine unrelated to the compressor cycle points at a fan bearing where one is fitted.
Causes, ranked for this freezer
- Something touching the back or side panels — Check this first: compact cabinets get pushed into corners where the back and one side are both in contact with something, doubling the opportunities. It is worth being sure about this one rather than half-sure, since everything after it assumes a verdict.
- Loose internal basket, shelf or divider — Check this second: a chest cabinet carries wire baskets that hang on the rim, and a basket sitting crooked buzzes against the shell. This is the entry most often blamed correctly and diagnosed carelessly, so take the extra minute.
- Condenser fan fouled where one is fitted — Third in order: a fouled blade ticks in time with the compressor, which is why the compressor gets the blame. Confirm it before moving on, because the entries below read differently once it is ruled out.
What to check, in order
- First — the space around the cabinet — Unplug the unit, pull it clear, and move anything touching a panel, the coil or the cord by a finger-width.
- Second — the baskets and dividers inside — Rest a hand on a basket while the compressor runs. A sound that dies under your hand is the basket.
Checks an owner can do safely
- Step 1. Reseat the baskets and dividers — Lift each internal basket and divider, reseat it squarely, then run the cabinet briefly with them out as a comparison.
Tools: noneAbout 10 min
- Step 2. Turn any fan by hand — With the unit unplugged, spin the condenser fan if the cabinet has one. It should turn freely and evenly.
Tools: flashlightAbout 10 min
- Step 3. Listen for a click-and-pause pattern — Stand behind the cabinet for several minutes. Click, long silence, click again is the overload cycling and it is where owner checks end.
Tools: noneAbout 15 min
Before you open anything
Safety
Kill the supply at the plug or the breaker, then check nothing can be switched back on by somebody else. A capacitor can hold a charge after the power is off. If a step only makes sense with the machine running, it is a technician step and not one of these.
When this becomes a service call
Draw the line by the tool the next step requires, not by how the freezer looks. The owner side of a noise complaint ends at what can be reached with the cabinet unplugged. Bearings, windings and sealed-system sounds are service work.
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
Scope, stated plainly: this covers Black+Decker freezers as a class. It does not cover the differences between families, production years or control revisions, and a model-specific page will beat it on any of those. Use Related pages to get down to the page written for your exact unit.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
