Problem with 192

[Ed Kish]

Seems I am having some trouble with my 192. If a create an audio track and send out of channel 4 of the 192 back to an aux input, I get a very loud hum or buzz. This only happens out of channel 4 and will work to any input. At first this would build up over time and by re patching it would go away. ( for a short while ). I assumed it was a problem with an fx unit I was using, but it also happens straight out of the 192 into the 192. Again for a while it was something that would build up, but now it is constant.
Just a little more info for you:
I have an additional AD card installed in the 192. I'm not sure if this started after I installed this and I dont feel like pulling this unit again and taking all of those little screws out YET.
I have checked the cables and that is not the problem, BUT , after switching cables it did go away for a day or so. I will call tech support on this , but I thought I would post this here as well .

Thanks

[DigiTechSupt]

It appears that this is a hardware issue directly related to the 192 I/O. Derfinitely give Tech Support a call so they can issue you an RA:
650-731-6100

Brent