Question about Behringer Xenyx 1002fx Mixer 10 Input 2 Bus with Efx
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Posted on Jan 02, 2017
SOURCE: Behringer XENYX 1202FX Mixer
It is possible one of the IC's failed.
You can apply an audio signal to the input and with a small amplifier with speaker you can trace through the circuit to locate which IC failed.
The input to the small amp split iattach 2 wires pr test least leads from a meter, ground the ground lead of the little amp to the mixer chassis, and then with the other wire/test lead trace the defective channel 1 IC at a time until you lose signal.
If you download the IC's data sheet, Most likely a 4558 typse, you can speed the testing by simly testing at the amplifier inputs and output of each section of the IC. When you lose the signal, you found the offending IC- use the other channel for compairison.
Digikey has a site search, so you can enter the number on the IC to find if they carry it, or a similar IC, and who makes it- on the item specification page there is a link to the datasheet. While they may not have all of them, they have quite a few.
Posted on Apr 01, 2012
Testimonial: "thanks john i'm trying to fault find this board at the moment these chips apear to be simple dual opamps however a schematic would come in extreemly handy, if you know where i can get my hands on one would be nice."
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