Hello.

Interesting site (forums) and just came across it by sheer luck (and sure does seem like the right place to be asking for help).

I need to add an effects loop to my Marshall CODE25 (x3) and my Marshall CODE50 (x2).

I've spent a good while trying to source schematics for these amps. and nothing (and Marshall will not budge).

I guess I just need to know where to splice into the circuitry/wiring (just before the power amp. stage) (I at least know that there is indeed a standalone power amp. stage/board in these amps.) to add the effects loop.

One thing I need mention: the CODE100/CODE100H do indeed have effects loops and given the design of these amps. I'm almost sure that if I could just get pics. of the inside of a CODE100/CODE100H showing where the effects loop board/jacks are connected to the main board(s) then I'd be good to go but to date I've not been able to find any such pics.  Also: for some or the other obscure reason the headphone out/line out on the CODE100/CODE100H disables the effects loop on these amps. so there's a clue right there (in my opinion) maybe???

Any ideas , tips, tricks, pics., schematics anybody???

Regards,

Dale.

P.S.

I have indeed managed to create a "pseudo" effects loop using multiple amps. (details here: http://www.marshallforum.com/threads/creating-an-effects-loop-for-code25-code50-using-multiple-amps.103913/) but it's hardly an elegant solution although it does work.  There's also some pics. on that thread of the inside of a CODE25 (taken from others) but I cannot make head nor tail of them to be honest.