[Al Skierkiewicz]

The backup batteries do have a finite life. If you have been using this battery for a long time and it has gone through many charge/discharge cycles it could be defective. However, it is relatively easy to check the voltage while connected to the RC. Make sure that the voltage remains constant by inserting your meter probes in the back end of the battery connector while the RC and OI are communicating. The backup battery is used to power all PWM outputs but the voltage is not used in Victor speed controllers, only in servos. The battery also powers the radio and primary circuits in the RC during main battery brownouts. It shuts itself off after 2 minutes. If you broke off one battery connector then resolder the other as well. One thing to remember is the RC and OI are multilayer circuit boards and pulling a pin out of the board may damage internal connections. If this happens some of the board may be powered when other parts are not. Additionally, there is reported to be a fuse in this circuit to protect the RC and power switching electronics. You may have burned that open or there is a short (two pins touching on a PWM port) and the voltage regulator is in over-current protect mode. Finally, there is reverse power protection for the battery input. Are you sure when you made the repair that the connector body was installed correctly? Check the wiring, the black battery lead should go to board common.