If suction suddenly changes, check the bin, connections and user-accessible air path before shopping for another vacuum.

What to check first
The Dyson DC34 manual specifies emptying at MAX and switching off/disconnecting the charger before blockage checks. Access differs by model.
A worksheet you can use
Motor noise and effective floor pickup are not the same observation. Record where performance changed to make support advice more useful.
| Item | What to record |
|---|---|
| Bin | MAX line and closure |
| Inlet and tube | Visible obstruction and connections |
| Brush | Hair and permitted user removal |
| Filter | Model-specific care and complete drying |
Check in this order
- Switch off and disconnect the plug or charger
- Inspect only the areas allowed in the manual
- Refit every part correctly before comparing normal pickup
If the problem remains
Stop for burning smells, battery deformation or repeated overheating/shutdown. Contact the maker. Do not push sharp tools deep inside or open the motor or battery.
Related guide
Vacuum Pa vs Air Watts: Why Pressure Alone Cannot Be Converted
A worked example
Example: if the change began after a long paper scrap was picked up, record that timing and any visible obstruction first. Advertising Pa figures will not identify that blockage.