Hi everyone. I recently found a used FBT M12X4 preamp unit and apparently there is a problem with one of the 2 channels (tested in every input).
I have experience on repairing stuff but i can’t find any schematic or service manual online.
Does anyone have the schematic for that unit or any idea of any similar fbt device.

Hello someone Calrec pre / eq PQ2462, I have two modules in a rack to use with condenser microphones, the truth is that they give me a lot of noise when I activate the phantom power. . I would like to find some documentation about them. The pcb is marked as PQ 815-022-9

Thank you

Hi All... I am new to the group and hope someone may be able to help. I have an early Rane SM26 on my bench and in need of a schematic. This unit does not use 7815 type voltage regulators but does have the power supply integral to the unit. Since Rane was bought out (by In Music Brands I think) information has been a bit more difficult to obtain.

Hi guys,

Like the title says, I got one of my two LA-610 who doesn't compress anymore.. the action faded over a few months.
I tried to change the tubes and even exchanged the opto cell with the other LA-610 and it did no good.

So I guess a cap or a resistor failed.. I'd need some guidance and some precise schematics

Thanks in advance.

duh hi all wilmot here: need schematic of the auditronics s 501 module.the one with the ne5524 ic,s.i have two of these and have been trying to get them working.e-male scats to kid286@juno.com..thanks in advance wilmot.audiolabs

Hi,
Does anyone have the schematic of the Mixer Tapco C12 Master?
Thanks
Sergio

Asking on behalf of a fellow member on another electronics repair forum. He seems to have a bad a resistor that is some type of 1/4 resistor that is right beside the bridge rectifier. Obviously, these new types of schematics are tough to come by... However, the year of the device is 2007 and all that is really needed is the value of this resistor.

I realize it's a long, long shot, but does anyone by any chance have the schematics for one of these:

It's an ANT TR700 German broadcast desk made in... sometime in the 1980s?

I've searched high and low for info on this, and specifically the schematics, but no luck so far.

Any ideas would be great, thanks a lot!

HI All
Have a dead one of these
Does anyone have the schematics please?
Its the one with 8 pushbuttons for delay time/repeats

I thank you!