Which siper is it?? I have both and you have to plug the older style directly into the wall socket or it doesn't work properly.. The new style it doesn't matter.. Mine would click and not get real hot.. Plugged it straight into a wall socket and it worked fine..
You can take head apart and clean or just order new inserts. Its usually from the spacers not making good contact. They told me to be careful when cleaning that you dont scratch or scuff the spacers anymore than they are.
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