CorOS Version: 3.0.0
Describe your issue:
Sometimes when I start the QC there is no sound coming from it.
This has happened multiple times
Steps to reproduce your issue:
Turn it on
I expected this to happen:
Beautiful guitar sound to come out!
The only fix I’ve found is to reboot, sometimes I need to do this multiple times
I have tried the following things:
You will be best served if you email support@neuraldsp.com so they can log your issue, collect diagnostic logs and hopefully provide resolution. As an initial test, I recommend to back up, perform a factory reset and restore to see if that resolves your issues. When this occurs, does the I/O screen register your input and output signals?
Thank you. Yes, I have emailed support, and they’ve given me a few suggestions of things to try, including selecting factory preset one A on start-up. For some reason this does sometimes resolve the issue.
Good thinking about doing a factory reset, I will also check the I/O page…
I’m still having issues with this, and from what I can see I’m not alone.
Neural haven’t really been much help so far - anyone else still having trouble with this?
I have had this issue numerous times. I resorted to purchasing a new unit 
. I will continue to try and resolve the issue with the original unit. I will keep you posted.
yeah had this too. My I/O Board got replaced, then i think it worked, but when i got it back, the display was broken 
So i’m waiting again for getting the QC back, hopefully a completely new unit.
This is exactly my issue as well. I had mine sent back to Sweetwater (U.S.) for repair. 3 weeks later, I get it back supposedly repaired (just today). It seems to be working fine so far. They replaced the Zenjack PC board and a capacitor. All covered under warranty thank goodness! The bill would have been US$533.47 had warranty not covered it.
One of the diagnostic tests they had me do was to pull down the i/o menu and look at the i/o meters. I had no sound, but the input meter was reading green about 3/4 of the way in (-18dB). I switched the screen to input 2, and it was the same way, even though I had nothing even plugged into input 2.
Yeah this is exactly what happened on my device @Doublehelix
You can imagine my heartrate when this happend while preparing all my stuff for a soundcheck at a venue. Holy s. I restarted the QC like 8 times, which costs me 20 minutes until it worked.
I will get back the QC from second repair (thomann) hopefully this week - i just hope it will WORK flawlessly. (my warranty ends next months…)
Neural was kind enough saying, that if anything happens to this unit again, i should contact them directy, not thomann. So props to the NDSP Team.
I have opened a support ticket with Neural DSP. They are processing it now. Where did you have to send it for repair?
Anyone outside the U.S. would need to send to Finland, otherwise Neural has a repair location in CA for all U.S. owners.
I did all the process with thomann. They had a repair partner for those things happening to the QC. Got back my unit meanwhile. At the moment everything works fine. I have rehearsal this friday and a show next week - hopefully everything will be fine 
The time without the qc was horrible. Playing it again after 3-4 weeks without it was like christmas honestly
Thanks for your response. I did hear from Neural Support. They instructed me to reach out to Sweetwater and make arrangements for shipping and ultimately repair. I am using my backup Quad and I am little nervous about being out here without a life raft.
Does anyone know the name and city of the California repair center? My buddy in No-Cal bought one of the first units (we’ll out of warranty, now). He lost one of the XLR outs recently and wants to get it repaired.
Email neural support
You /he would definitely need to email support@neuraldsp.com to coordinate repair.
Thanks for that.