Icon Designs A4 Mixer

[Nigel Goodwin]

I've just bought one of these Icon Designs A4 Mixer's cheap off Ebay, with no PSU. I've got the PSU sorted out, using a 15-0-15V mains transformer, but there's a couple of small faults on the mixer as well.

Does anyone have a circuit diagram for it?, it would make life much easier

 

[williB]

the guy you bougt it off of had no specs on it ?

 

[Nigel Goodwin]

the guy you bougt it off of had no specs on it ?

No, just the mixer, no PSU or anything - but it was cheap :lol:

I've fixed it now without a circuit, there was an open circuit PCB track causing channel 2 not to work (+ve supply missing to the first opamp), and on channel 1 the bass control didn't work, the pot track is actually broken. I've swapped it for the mono output level pot, and it works fine.

I just need to try and find a suitable replacement pot now!.