Intermittent right blinker operation.
Hazard lights were working fine.

After discussing with the customer, two issues were identified:
- while driving and turning right the blinkers would stop working
- occasionally when going back to centre position after a turn, a consistent buzzing noise could be heard until the blinker arm was moved around.

Traced both faults to poor contact and contamination, in the combination switch (lights and blinker).