Behringer Eurorack MX2642A: Difference between revisions
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Revision as of 20:59, 8 November 2013
The Behringer Eurorack MX2642A 26-input 4-bus mixing console is one of YSTV's spare sound desks. Typically used for medium-sized OBs that aren't worth the hassle of taking the ZED 428 (for example shows requiring multiple mics but no mixing of music).
What's in the Box
Repair work in October 2013 provided a great excuse to have a nosey inside the Eurorack's case. A set of schematics was also acquired. There are a few notes below that will hopefully be helpful for any future repair work.
Faults/Repairs
Known Faults
The Eurorack is currently believed to be fault-free. Please contact the Technical Team if this isn't the case.
October 2013 Repairs
As mentioned above, repair work was undertaken at the start of the 2013-2014 academic year to fix the following previously reported faults:
"Channel 1 does not send to main/group mix"
Further testing revealed that whilst the channel sent to auxes 1 and 2, auxes 3-6 and the group and main mix buses (everything post-fader) received no signal. The original ALPS RS6011 10K P series linear potentiometer was difficult to obtain in Europe, but fortunately Farnell stocked a suitable replacement: RS6011Y10K. The pot fit in the space on the PCB (although it didn't have reinforcing lugs), but a little careful work with the hacksaw was required to shorten the fader control to the same length as the others.
"Channel 7 XLR port is dead"; "Channel 8 is far too quiet (probably a dead preamp)"
Initial testing suggested that channel 8 was working, but that channel 7 had a faulty mic preamp; channel 7's mic input was very quiet but the line input seemed OK. However, in the stage-by-stage analysis of of the channel that took place when the case had been removed no problems could be found. Both channels would go on to work perfectly with mics in the recording of Have I Got News For York that took place at the end of the month. Failing an act of cunning sabotage by URY, the only credible explanation that anyone could think of at the time was a dodgy solder joint that was knocked back into place whilst removing the PCB from the case. If either of these channels doesn't seem to be working as expected, please don't hesitate to contact the techies as above.
External links
- Behringer EURORACK MX2642A 26-Channel 4-Bus Mixing Console discontinued product page
- EURORACK MX2642A user manual