Damn it, I did spot something new but it was a rotary pedal not a mellotron pedal… *grumbles*

I don’t think the originals takes a power supply, it runs on 2 x 9V batteries for bipolar +/-9V supply.

It might be clutching at straws, however, last time EHX did one of these circle ‘family’ photos, the Pitch Fork was hidden at the back before release and in this image I see a 4 knob pedal with a rotary that has white knobs while the B9, C9 & Key 9 all have black knobs.

Yes they may have just switched knob colours or could it be…

This should do the job http://www.bitsbox.co.uk/index.php?main_page=product_info&cPath=116_120_121_122&products_id=867

The AC refers to the adapter that would have originally been used with it which supplies 9 or 18V DC depending on the model, trust me, you’re lucky it still works at all (unless you did actually use DC).

Go to google, type site:ehx.com/forums (your search term)

Problem solved.

Well I can do it but i’m in the UK, for logistics sake I suggest you seek out The EH Man on the forum, he should be able to take care of it.

Well I don’t need them butchered as such, but a couple of photos of the PCBs would be appreciated if you do change your mind in the future.

There’s no Echo 600 schematic in existence and it uses 3 x MN3005 from the one gut shot I have seen so must be different in design other than additional parameters to the Deluxe memory man to some degree at least and while I do have one for the reverb, I have no idea how accurate it is.

So as a vintage EHX enthusiast i’d be interested to have some concrete information on the circuit designs for my self, the DIY community and for any units that might cross my path for repair

It certainly would be cool to find some units for spares or repairs, if you find any, keep me in mind for getting the repairs done if i’m correct you’re in France so being in the UK i’m a lot closer than some of the major EHX repairers in the US.