I have two Numark TT500 turntables. They each have a slider which controls the pitch (speed the motor rotates the platter that the vinyl record sits on). The problem is that 0% pitch distortion is supposed to be in the dead center of the slider, but 0% is at the very bottom of the slider, not in the center. The zero is way off center, rendering the tables unusable for DJing. (I can tell where the zero is based on the sound, and an LED lights up telling me when I am at 0)
I took the slider out of the turntable and measured two points on the bottom of a pcb attached to the slider assembly which I think lead to the potentiometer the slider uses. The resistance measurements are as follows:
~1kOhm slider all the way up
~5kOhm slider centered
~10kOhm slider all the way down
These seem about right, considering its a linear pot.
What I'm asking for is help diagnosing and hopefully fixing this problem with my off-center zeros. The bad pitch sliders are stopping me practicing mixing and enjoying my music. I would order replacement slider assemblies but Numark has been on backorder for them since around January of this year, so it seems I'm out of luck there.
Help would be very appreciated, please and thank you
I took the slider out of the turntable and measured two points on the bottom of a pcb attached to the slider assembly which I think lead to the potentiometer the slider uses. The resistance measurements are as follows:
~1kOhm slider all the way up
~5kOhm slider centered
~10kOhm slider all the way down
These seem about right, considering its a linear pot.
What I'm asking for is help diagnosing and hopefully fixing this problem with my off-center zeros. The bad pitch sliders are stopping me practicing mixing and enjoying my music. I would order replacement slider assemblies but Numark has been on backorder for them since around January of this year, so it seems I'm out of luck there.
Help would be very appreciated, please and thank you