In short
Burning smells, tripping breakers, scorched connections and shocks come from the supply connection, from a heating circuit breaking down, or from lint where it should not be. None of them waits. These are tolerant of very little: an out-of-range input stops the cycle rather than degrading it, so faults are binary and repeatable. Most of what follows is about conditions the machine is checking rather than parts that have failed.
What you actually see
- The breaker trips once the machine calls for heat — A heating circuit failing as soon as it is energised.
- Scorching or melting at the plug, socket or terminal block — A connection making heat instead of contact, on a circuit that carries a lot of it.
- A shock or tingle from the casing — A bonding or insulation fault, and a reason to isolate immediately.
- NEAR MISS: a hot smell on the first use of a new machine — Manufacturing residue burning off, which happens once and does not repeat.
The causes in order of likelihood
- Lint accumulation around heat — The one to suspect first. It leads because lint is combustible, it accumulates invisibly, and a dryer is the one appliance that puts it next to a heating element. Restricted vents and a full filter put combustible dust next to an element. It is the reason this class of symptom is treated more seriously on a dryer than anywhere else.
- Loose or overheated supply connection — The second suspect. A dryer terminal block or plug that has loosened makes heat every time the machine heats.
- Heating element breaking down — Third, and less common. An element that has failed internally trips protection the moment it is energised, so the fault appears at the same point in every cycle.
- Damaged cord or crushed cable — Fourth, and less common again. A cable trapped behind a machine pushed back against the wall, which is how most of these begin.
- Body: These are ordered for this brand and appliance rather than for the appliance class in general, and the ordering is qualitative.
The diagnostic order
- Switch off the circuit at the breaker — Everything else is done on a dead machine.
- Inspect the plug, socket and terminal area for heat damage — Scorching on this appliance is significant because of what it sits next to.
- Check the lint filter and the whole vent run — Restricted airflow is behind most overheating on a dryer.
- Body: The order below is carried out with the machine isolated and unused. There is no owner-side live test here.
What you can do now
- Isolate the machine and do not use it again — This is the one appliance where running it to reproduce a symptom is genuinely dangerous.
- Disconnect and clear the vent run with the power off — Check the exterior flap opens freely and is not blocked by a nest or debris.
Tools: vacuum, screwdriver
- Photograph any scorching before touching it — It tells a technician where to start.
Tools: torch
- STOP. Do not open the cabinet or test anything live — Lint, heat and a heavy supply are not an owner combination.
Safety first
Safety
Unplug the appliance or switch off its breaker before removing any panel; a capacitor can hold a charge after the power is off. Do not run a dryer that smells of burning, and never bypass a thermal cut-out or run the machine with the vent disconnected.
When this becomes a service call
Every symptom here is a service call, and on this appliance it is an urgent one. Isolate the machine, clear the lint filter and the vent run, and have the supply connection and the heating circuit checked before the dryer is used again. Say whether the machine refuses to start or stops partway: they are different faults.
Pages of the same class
What this page does not cover
This page is written for the appliance class rather than for one Blomberg family or model line. Where a family- or model-specific page exists for your unit it is the more specific answer and should be preferred over this one; the brand and appliance hub linked below routes to everything more specific that exists today.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
