Marantz 2015b just started a hum noise

turaipo

New Member
I used it as my home cinema (Plugged to TV via Aux) since many months and yesterday, it started a hum noise on both speakers, no matter the volume and the input selected. I tried to turn off all the others device around too. I am able to open, clean and change bulbs, but as for the electronic part, I am a newbie. Any advice?
 
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