Bose Tonematch T4S channel strip/Aux out noise
I had purchased a Bose T4S Tonematch mixer online in Dec 2019.
Worked seamlessly until 2 months back when it started giving a white noise in channels 1 & 3 whenever the Phantom power is switched on. Upon pressing the button, a huge disturbance/rush of electricity maybe comes in the channel and dies down within 5-6 seconds.
Also, the aux out channel is having the same issue.
The problem started occurring when I switched on the 48V while the gain and volume knobs for channels 1 & 3 were open which were connected to a condenser and a mandolin with a pickup. I heard a loud crackle and the white noise started occurring thereafter.
I don't know how to deal as I live in Mumbai, India and the product was purchased in New Jersey, US. I have tried connecting to their support team but got no response probably because of the COVID-19 lockdown.