SOURCE: power supply problem in Behringer pmp 3000 mixer
Just try to resolder all component parts in power supply section,maybe there is a loose connection or cold solder joints that causing of abnormal voltage or missing voltage.Also check the resistor for cange value causing the voltage trap.Check also all electrolytic capacitor for leak. Hope it may help you;;
SOURCE: i need a wiring diagram for the main circuit board
Behringer only gives schematics to their authorized service people.
I find I can usually trace stuff out as needed as the mixers are a very symetrical repeating circuitry.
Most components are readily available from other sources.
SOURCE: How do I connect my behringer mixer desk to
The first thing to do is to swap teh L & R INPUTS to the amplifier. Did the speaker that works change?
If som the problem is with the setting of the mixer deck. If it did not change, then the problem is with your speaker wiring of the dead speaker, the speaker itself, or that side of the amp.
If the working speaker did swap, that means problem is with the mixer. The question then becomes how are you connecting to the mixer. You should be using TRS 1/4 inch connectors or preferably XLR from the MAIN outputs. These are balanced outputs connections.
If the inputs are from one of the mono inputs, the PAN control for that channel will control how much goes to each speaker... If at center, both will get same signal.
There are so many possibilities that I can't evaluate them until you try the test to find if it is problem of the amp or the mixer that I have given you to try.
SOURCE: LEVEL POT ON A BEHRINGER EURORACK MX 602A-BAD
It appears that both these use a 50K pot in the identical circuit and it is UNLIKELY they re-engineered very much so it is likely they use the same pot.
Behringer parts service should be able to tell you.
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