I need to replace one of the Main Mix potentiometer ( encoders? ) because they don't respond correctly and the touch it's to hard compared to the others. Anybody can help me to indentify this pot?
In which case they are Alps RK14 series stereo pots. And the value 103 normally stands for 10k. The letter C normally means C curve / reverse log but that normally would be in capital letter.
However, Can you measure the resistances as I have shown in the picture?
Top/bottom pins will give you the absolute value.
When viewed from the top, bring the wiper to the center and measure the resistance between the wiper and top pin, and wiper and bottom pin.