Hi some of my knobs have problems with value, not centering correctly and seemingly sending random values.
If I center them on hardware..
LOW eq deck 1 does not center correctly in software
HIGH eq deck 1 does not center correctly in software
Gain deck 2 does not center correctly in software
I give pictures of two "states", pictures of knobs, djuced and seemingly random midivalues keep popping into midimonitor..
I uploaded pictures to imgur and a rar here since forum only allow 1 file....
Imgur: The magic of the Internet
I have tried the calibration guide, but I cannot get past stage 1 to go from red to orange, I put all the potentiometers at min and then center..
Some more testing that I cannot edit into the first post:
I set all the potentiometers/knobs to max, which gives no values in midimonitor, I then try:
1. Move Gain deck 2 to center and clear messages. Gives random values in midimonitor: 
2. I set Gain deck 2 back to max and move Gain deck 1 to center, clear messages: This gives no ranom messages.
3. I set only LOW eq deck 1 to center, gives random values too: 
4. I try also with LOW eq deck 2, seems stable, no jitter/ random values.
5. oddly enough High eq deck 1 was fine and stable and gave value 0/64 for a bit after this but now it is back again to random values at center position. (after I "jixed it" by testing with other knobs, it jitters when I try it "individually" now aswell, like the above result for Low deck 1 and gain deck 2..)
I seem to have problems with these 3 potentiometers..
Hello Annoying1,
Thanks for your message.
Please precise what you call random value: do you mean:
a) the MIDI value keeps on changing while you do not touch anything?
it is called jitter and prevent you from completing a calibration process on DJ controller.
b) the MIDI value is fixed (not changing alone) but not in continuation with the MIDI values of the close positions of the rotary potentiometer?
It should not prevent you from completing the calibration.
If you are in situation a), the most likely explanation is that the 3 rotary pots (Gain deck 2, EQ Low deck 1, EQ High deck 1) are defective:
i) either permanently
- Mecanically damaged by an excessive weight on the top (likely cause of this is putting the laptop computer on the controller and letting the laptop weights on the potentiometers for days, which gradually crashes the carbon tapers of the potentiometers / the other way to get it is a big shock in transport)
- or rusted (if the controller was stored in a humid room without protection as a plastic bag, a cover (as decksaver covers) or a transport bag
ii) or temporarily because of dust at the basis of the potentiometers: you can test if by removing the potentiometers caps, having a vacuum cleaner over the potentiometers basis (removing possible dust on the taper of the potentiometers).
If your controller is in situation i), you can contact Hercules technical support on https://support.hercules.com/en/contact-en/ and:
- if the controller is still under warranty, they can give you the process,
- if the controller is no longer under warranty, they can give you the reference of the potentiometers (or sell you the potentiometers) to get in exchange, so that you can go to an electronic repair store and have the potentiometers removed and replaced on your DJ controller. If you are in situation i), it is probably safer to change all the EQ and Gain rotary potentiometers (8 potentiometers) changed as in case of heavy weight or vertical shock from Gain Deck 2 to Low Deck 1, all the pots in this area have probably been touched and possibly damaged and may stop working gradually.
