Soundcraft EFX8

[aanan]

Soundcraft EFX8 i need schematic mic socket no 6&7 no output.
THANKS

[Agent24]

Re: Soundcraft EFX8

You probably don't need a schematic - you have several other Mic inputs that work, right?

Compare the circuitry between the bad inputs and the working ones. Do they supply power to the mic? if so, check voltages.

Try playing a constant sound into the mic, trace the signal through each input, compare with oscilloscope etc

[coolaudio]

Re: Soundcraft EFX8

I have same problem but different inputs..will let u know how I get on, a mate has a scope

[Khron]

Re: Soundcraft EFX8

The FX part is on a separate board, but the analog circuitry is virtually identical to the EPM mixers.

[audiobrad]

Re: Soundcraft EFX8

Hey coolaudio

Check your input op-amp ic's ,some use two inputs on one ic (4558 or 4560) but if they single input per ic ,it should be easy to replace (smd or dip).plug a signal generator into the mic @ 0.150mv 1khz and probe pin 1 and pin 7.

Let me know what you have found ?

audiobrad