Lead 2x - Portamento Potentiometer Problem

Nord's classical Virtual Analog Synth Nord LEAD 1/2/2x/3/4/A1 and Nord Rack versions
Post Reply
Pjngu
Posts: 1
Joined: 29 Aug 2018, 18:52
Your Nord Gear #1: Nord Lead 1/2/2x
Your Nord Gear #2: Nord Electro 3

Lead 2x - Portamento Potentiometer Problem

Post by Pjngu »

Hi everyone!

I have a Lead 2x and I have a problem with the Portamento Potentiometer: in particular, when I use it, the sound parameters are changed randomally ( octave, noise amount and more). How can I fix it? :sad: :sad:
User avatar
Mr_-G-
Moderator
Posts: 4624
Joined: 18 Aug 2012, 16:48
Your Nord Gear #1: Nord Stage 2
Has thanked: 1419 times
Been thanked: 1230 times

Re: Lead 2x - Portamento Potentiometer Problem

Post by Mr_-G- »

I can think of 3 options: "clean" the pot with some spray product for that purpose (if you know how to do it), change the pot/encoder yourself (if you are sure it is that what is faulty) or you send it to a service. I doubt that there is a "software" fix for that.
Ledbetter
Donator
Posts: 320
Joined: 05 Jul 2013, 03:31
Your Nord Gear #1: Nord Electro 5
Your Nord Gear #2: Nord Lead 1/2/2x
Has thanked: 67 times
Been thanked: 83 times

Re: Lead 2x - Portamento Potentiometer Problem

Post by Ledbetter »

Unless you know what you’re doing, take it to a certified tech and have the pot replaced. Talk to a Nord rep for your geographical area.

You have to take the synth apart to get the contact cleaner to the location that need cleaning. Cleaning a pot with contact cleaner is not a sure fix. Good luck, best wishes.
Nord Stage 3, Electro 5D, 4D, Lead 2x, Moog Voyager, Little and Slim Phatties, Kawai KG-2C 6 foot grand,
wartaler
Moderator
Posts: 738
Joined: 19 Mar 2009, 18:32
Your Nord Gear #1: Nord Stage Classic
Your Nord Gear #2: Nord Drum 2
Has thanked: 83 times
Been thanked: 215 times

Re: Lead 2x - Portamento Potentiometer Problem

Post by wartaler »

Hi,
I know this is a very old thread, but I have a similar, if not exactly the same problem, so I was wondering if & how the NL2x in above post was fixed, if other people experienced something similar,..

When I turn the Portmento knob, sometimes one or two other parameters jump to another value, I checked with a MIDI monitor app and it's not just random values in my case, it's the value that corresponds with the physical position of the other knob(s), so if the OSC2 octave knob is at position 0 (CC value 60) OSC2 octave will go to that value if it wasn't already. What does seem to be random is which other parameters, but I think in most cases it's from a knob that was recently used, and sort of 'in between values', but sometimes I even see a pitch-bend message pop up, which isn't even a pot.

I'm not sure if the pots are dirty or whatever is reading the pot values (multiplexer?) is messed up:
-After monitoring MIDI for hours while not touching the NL2x, no spontaneous MIDI messages were detected.
-All knobs seem to work fine, they smoothly go from CC value 0 to 127 (or whatever range is used for the parameter) and back without jumps or glitches, including the portamento knob.
-Turning the portamento knob (usually below CC value=1) somehow seems to trigger a readout of the actual position of other knob(s)
-Also pressing the LFO1 wave select and Arp on/off buttons can trigger this
-Sometimes I even see pitch-bend messages appear, which I think isn't even a pot

I cleaned all pots and still get this behavior..


Albert
Last edited by wartaler on 22 May 2020, 15:45, edited 15 times in total.
Nord Drum 2, Drum (1), Lead 4, Lead 2x, Stage 'Classic', Micro Modular
Post Reply