I’ve been busy with other stuff for many moons, and only just noticed that my Sub Phatty’s oscillator 1 octave switch isn’t working any more. Software or hardware problem?
I have the exact same problem - I can change it in the Sub Phatty Editor Software when hooked up to my computer via USB but can’t change it with the actual knob. I may try reinstalling the latest firmware and will keep you posted if that works.
Have you asked Moog yet? techsupport@moogmusic.com
Thank you, just hit them up. Seems obvious but thought a quicker response may come from the forum. Thanks again!
Thanks - also sent e-mail to support just now 
Did the firmware update work, Michael?
So… I tried to update the firmware (as Nick from the service department suggested via e-mail).
Now my Sub Phatty is “dead”. Very unhappy, as it was mostly working before. A minor problem has now become major 
My apologies, got busy for a few days. I just updated the firmware tonight and nothing changed for me, everything still works the same and the octave knob doesn’t work. At least you got a response from Moog, I haven’t received one since I sent my email. Which version of the firmware are you installing? I used 2_0_3 which I believe is the latest.
I’m going to login with my account through Moog’s website and submit a service request that way (last time I just used the contact info from their site and sent from my email account). Hopefully we get somewhere with this…
Keep me posted too if you discover anything more.
MJ
Here is the 2.0.6 firmware: http://www.moogconnect.net/downloads/subphatty/SubPhatty_v298_2_0_6.zip I don’t know why that version is not linked on the download tab on the Sub Phatty product page. I don’t recall having a problem with that switch when I was still running 2.0.3 though, so it might be a hardware defect.
Thanks Breun, I’ll give it a go. Moog tech support thinks it may be coincidental that I installed the firmware update and the switch stopped working, saying it’s likely a hardware problem. I also specified that I just started using the Sub Phatty editor software and it seems to have stopped working as I’ve installed and started using it. Again, could just be a coincidence, not sure.
hi there, my subphatty also suddenly didn’t change octaves on one of the VCO’s. the software editor changed octaves, but not the knob on the panel. It was sent in for repairs to the Swedish distributor. They found out what was wrong, and fixed it. It was not firmware related, because I also first tried reinstalling firmware, and then contacted Moog support. the told me to send it in for repairs. I replaced it with a Sub37 recently, to get more modulation sources and knobs on the panel 
My Sub Phatty Oscillator 1 Octave Knob is no longer responding. Was this determined to be a hardware or firmware problem? I am running firmware 2.03, I believe.
This same exact thing has recently happened to my Sub phatty. It seems curious to me that so many people are have the same problem. Any new news?
I just noticed mine is doing this too. Hardware switch does nothing, software editor works as expected.
Anyone have a fix for this yet?
According to Moog it’s strictly a hardware problem. I sent my SubPhatty to them to fix and I have it back now, works great. They charged me their standard bench fee of $50 plus shipping, so it’s an easy part replacement it’ll just cost you unless your synth is still under warranty.
I just got my Sub Phatty back from repair a couple of weeks ago and now my Osc octave switch stopped working as well.
Wonder if it’s due to the hot weather we’re having.
HHB sorted this within a day, working fine again.
Happening to me also!!
So by reading you all in this post, the only way to fix that is to send it for repair? Really?
of course its out of the warranty…
I’m not very happy for my fisrt Moog to have this.. I had other problem with this synth…
I just discovered that my Octave knob for Osc 1 doesn’t work all either, and this is the first hit when I googled for my problem.
Do I actually have to send this thing in to be fixed, or what’s going on?
Hey guys,
Andy from Moog Tech Support here!
This does sound like a failure of the switch itself, but I have seen only a small number of Sub’s out of the many thousand we have made ever have a problem like this. It will require the attention of a technician.
Please contact us directly:
Andy Hughes, Service Manager
andy@moogmusic.com
828-251-0090 xt 221
Nate Marino
natemarino@moogmusic.com
xt. 204
Taylor Mott
taylor@moogmusic.com
xt. 217
Thanks,
Andy Hughes
Service Department Manager
Moog Music, Inc.
Thank you for the information, Andy! 
Nathan was very helpful; got me sorted out and pointed in the right direction for getting the switch fixed. His help is very much appreciated.