QSC K-12 powered speaker humming from speaker
Thanks in advance for any assistance I have a QSC k12 speaker and it has a humming sound coming from the speaker. Speaker buzzing with no input connected.
I have removed the large capacitors and tested them with multimeter. They were within tolerance. This is not an AC ground loop as I have other speakers that are working fine from same supply.
I am proficient in schematics but would like some help in diagnosing this one if anyone has experience here.
Thanks you and have a great day.