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Hey all,

I just bought an MCI JH428b which is apparently in good working order. There's a guy here in Melbourne (Aus) who apparently services and modifies these consoles quite well.

There's already been some mods done to the console:

Mods: Audio power supply and some IC positions have been modified to suit NE-5534 OP Amps.
One channel has ‘Trans-Amp’ mic preamp fitted.
All channels have active balanced line input mods.
Reworked buss levels to reduce signal to noise by 15dB.
Reworked earthing & supply filtering to reduce hum.

I'm gonna get rid of the active balanced line input mods as apparently they take away from the true sound of the console. Also, apparently some status relays need replacing.

Apart from the above does anyone here have any suggestions on what to do in order to get the most out of this console?? I don't want anything too fancy, just whatever is gonna give me ease of use and the best possible MCI sound.

I'm not really electronically savvy so it'd be great if you could inform me on what things should be left to professionals and what things I could have a crack at myself.

Cheers

Darren

To answer my own questions....  right in between master modules 1 & 2 there are 2 rows of molex pins THAT is quad buss in and where the output of the aux module (8,9,10,11) needs to go.

Right next to those molex pins are another set of pins and thats where que1 and que2 go.

And as for the on/off button lights, you have to jumper "AUTO MUTE SEND"  & "AUTO MUTE RETURN" together thats like pins 41,42 44,45  47,48 and 31,32... I think.. I'd have to double check but thats pretty close. 

AND THAT will get you 4 more auxes!!!   

Great scans, Thanks!   

http://www.mediafire.com/?0d9evnxqpnmuxal
http://www.mediafire.com/?87zbivlobv4xz5q

So E5 comes in on 29/30  E6 = 40/41  E7 = 105/106  E8 = 107/108   Now I've got my output of the module getting signal all across the CueBus and QuadBus (pins 4,5,6,7,8,9,10,11) and it looks good...  I just can't figure out how to get THOSE outputs over to whereever they need to go

You guys are excellent - thanks for all this....

Just fired off an email to TL Audio.....They may tell me to "piss off".   Who knows?

Will report back.

Mike

at $180 a pop I think a redesign of "how to make things glow" is in order.... 
I've got a couple of ideas.

Not the daughter boards I'm talking about...  these are ON the modules themselves... I'll take a pic

Ok, getting signal to that module wasn't hard, the E5, E6, E7, E8 buttons don't turn off though...  I think I'm still missing some sorta cross-connect for it to be happy and I don't see it yet.