This AEG vacuum cleaner is also sold under the brand Electrolux.

A disconnection close to the schuko mains plug in the cable resulted in too fast powering and de-powering of the vacuum cleaner, which resulted in blowing up the triac (depicted above).
The BTB16-600B TO-220 triac can be bought for about 0.17 Euro.

Repair: replace schuko mains plug and replace BTB16-600B triac

Manual PDF
Brand and type mark
Frontside power adjust PCB
Backside power adjust PCB
Vaccuum cleaner engine
Triac BTB16-600B
Triac detail
Cable roll system, engine and power steering PCB