I purchased a Ronin SC Combo recently, in used condition. But, he had a centering problem. He almost always panned to the right. After many resets and calibrations, I suspected the JOYSTICK sensors. Such sensors are composed of two potentiometers. THE SOLUTION was simple: put contact liquid, type W40, on the two sensors. Heads up!! No need to unsolder the sensors! I put the liquid superficially, while moving the joystick lever. Now it works like a charm!!  

More details: https://www.youtube.com/watch?v=oxZVwNGscuA

I purchased a Ronin SC Combo recently, in used condition. But, he had a centering problem. He almost always panned to the right. After many resets and calibrations, I suspected the JOYSTICK sensors. Such sensors are composed of two potentiometers. THE SOLUTION was simple: put contact liquid, type W40, on the two sensors. Heads up!! No need to unsolder the sensors! I put the liquid superficially, while moving the joystick lever. Now it works like a charm!!  

More details: https://www.youtube.com/watch?v=oxZVwNGscuA