evilcat
Well-known member
Hi there!
Some time ago my soundcraft mixer stopped working (sort of pulse when engaging +48V). So I opened it and saw the PSU burned. I built another one (JLM AC/DC) and fired it up.
I doesn't have the "+48V pulse problem" anymore but nothing goes to the mix bus: I can solo a track, make my gain and see it on the led meter but don't hear anything. When I un-solo the track and push the fader... nothing in the mix bus, nothing on the meter, nothing on the monitors!
I don't have the skills to repair it, I can only looking at some obvious problems on components and I've seen 2 Op Amp a bit burned, IC4 and IC6 on the pictures. Can it be the source of my problem?
Heres a link for the pdf schematics of the mixer: http://1drv.ms/1j83s9n
IC4 and IC6 appear in page 11 (for monitor, aux and metering duties but not for summing!!!)
Sorry for those long explanations, if someone can help it would be awesome! Thanks.
Ben
Some time ago my soundcraft mixer stopped working (sort of pulse when engaging +48V). So I opened it and saw the PSU burned. I built another one (JLM AC/DC) and fired it up.
I doesn't have the "+48V pulse problem" anymore but nothing goes to the mix bus: I can solo a track, make my gain and see it on the led meter but don't hear anything. When I un-solo the track and push the fader... nothing in the mix bus, nothing on the meter, nothing on the monitors!
I don't have the skills to repair it, I can only looking at some obvious problems on components and I've seen 2 Op Amp a bit burned, IC4 and IC6 on the pictures. Can it be the source of my problem?
Heres a link for the pdf schematics of the mixer: http://1drv.ms/1j83s9n
IC4 and IC6 appear in page 11 (for monitor, aux and metering duties but not for summing!!!)
Sorry for those long explanations, if someone can help it would be awesome! Thanks.
Ben
