I have had a Bionx system for about 6-7 years. I replaced the controller last September. Tonight when I plugged in the battery to charge, the transformer on the charger made an odd clicking noise and the indicator light did not come on. This charger has not failed me in all the years I've owned the system. I've read some threads that suggest resetting the charger with the on/off switch. I don't see one on my charger. Am I missing something? If there were one, where would it be located?