Low Voltage from PWM Outputs

We are getting 3.8 volts from the PWM outputs, which is not enough to drive the servos on the camera. Can anyone tell me what may be going wrong?

Check your Backup Battery voltage. This is where the PWM voltage comes from. Measure the battery voltage before and after it is connected. If the Backup Battery voltage drops when connected, you may have a short to ground on one or more of the PWM power pins. If the Backup Battery can not hold a charge, you need to replace the battery.