«  Récurentes related failures rheostats »

I often appreciate the opinion based, but in this case I have to comment: The faults described do not affect the engine running or not, but different rheostat for adjusting speed: they oxidize with time, and the current flowing encounter more or less resistance on these traces, which results in changes in numbers of variables RPM motors .. Ideally, after the exchange of rheostat, or the product KF Contacts, and if you have neither one nor the other, it's just elbow grease: You must re-honing contacts soliciting strongly in-as was the barrel-a some time.
This is also valid for the volume pots or other ...