behringer vmx300 dj mixer no main output

blackpatz · 5th September 2010, 11:59 PM

hi there,
two channels on my dj mixer are not sending a signal to the main output. i have headphone output OK of each channel and a signal is present on all channels but there is a fault when sending to the main output. the third channel is OK no problems. any help? thanks.

bob91343 · 6th September 2010, 04:31 AM

Let's see a schematic.

bob91343 · 6th September 2010, 04:36 AM

Okay I found the diagram. Looks like the main outputs come from three ICs, IC14 IC15 and IC18. I'd look there for problems. You will need an oscilloscope.

blackpatz · 6th September 2010, 05:28 AM

Thanks bob, i have a CRO so will check out those chips and let you know.

5th September 2010, 11:59 PM	#1
blackpatz diyAudio Member Join Date: Sep 2010	behringer vmx300 dj mixer no main output hi there, two channels on my dj mixer are not sending a signal to the main output. i have headphone output OK of each channel and a signal is present on all channels but there is a fault when sending to the main output. the third channel is OK no problems. any help? thanks.

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6th September 2010, 04:31 AM	#2
bob91343 diyAudio Member Join Date: Mar 2010	Let's see a schematic.

6th September 2010, 04:36 AM	#3
bob91343 diyAudio Member Join Date: Mar 2010	Okay I found the diagram. Looks like the main outputs come from three ICs, IC14 IC15 and IC18. I'd look there for problems. You will need an oscilloscope.

6th September 2010, 05:28 AM	#4
blackpatz diyAudio Member Join Date: Sep 2010	Thanks bob, i have a CRO so will check out those chips and let you know.

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