Dyson DC02 troubleshooting tips - suction, noise, electrical problems
If you are having suction problems with your Dyson DC02, first of all check both of your filters.
Remove both filters and switch your Dyson on, you will have either two S level filters or one S level filter and a HEPA filter like the pictures below:
If after removing the filters the suction is still poor, then check if the suction from the wand/ hose is ok, if that is ok is it a problem with the pick up from the brushbar? Troubleshoot suction problems from both the wand or base below.