Fingertip controls problem

M

Martin

over the last few weeks i've noticed that my finger tip controls for the stereo are less responsive than they were when new, and then the past couple of times i've turned the volume up a couple of notches the volume has carried on rising to full volume. When this happens i cant turn it down via the finger tip controls and when i try turning it down on the actual stereo the volume still tries to raise. the only way i can get round this is to turn the stereo off and then back on.
Yesterday when it happened i turned the stereo off and back on and a couple of minutes later used the finger tip control to adjust the volume down but nothing happened.

Anybody else experienced this? And im presuming its a warranty issue?