X1800 makingterrible clicking sounds

I have experienced terrible buzzing sounds from my X1800 mixer, which I barely used ever since I purchased it. Now, this mixer is making such noise whenever I turned it on and I can’t do any mixing with it. This issue apparently is very common and has been happening to countless other X1800 mixers. My issue has been exactly the same as stated in this post X1800 making whirring clicking sounds

I been calling denon headquater’s phone number for weeks nobody picked the phone. I have an important show coming a month, I’m so helpless.

If you bought it new, create a ticket. If you bought it used, it’s fixable.

Sure to create a ticket at Denon ? I would at first go with the shop where I bought it.

Where can they fix it?