Question about Behringer FBQ6200 Home Equalizer
60 Hz hum? May have a grounding problem. can you turn the power plug around or is it a one way plug?Any ac or dc voltage between unit and control/poweramp?Can you ground unit? Check for voltage first.
Posted on Oct 06, 2009
The FBQ6200 has got a traditional dual power supply built with two linear voltage regulators. These are positive and negative "three-pin" 15 Volts regualtors located on the input/output jack board. The regulators are of the well-known 7815 / 7915 series, mounted on the only heatsink you will find there. Check them, by the way, they are mounted with insulation pads.
The input and putput amplifiers are built with S4580 dual-Op-Amps and are frequently destroyed by hot-plugging the input/output cables.
Remeber: The appliance has symmetrical or so-called balanced input/outputs, but not with real transformers and therefore real isolation. The input/outputs are electronically balanced (and unbalanced) with these op-amps (integrated circuit, search them in the web), and these ICs do not withstand static electricity.
Posted on Jan 18, 2010
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Posted on Jan 02, 2017
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