Digitech RP1000 Guitar Processor

[g1]

OK, I forgot this was a foot pedal unit which explains why you want it away from your amp. I don't see where the voltage drop will be, you will be bypassing the diodes. Unless the snake is very thin wire there should not be much drop in the cable.
Run the unit with the ac adapter and measure the DC voltage at the + end of C47 on the schematic (this is where you will be connecting your DC power). Choose a DC adapter (regulated) that puts out that DC voltage and is rated for 18 watts. Theoretically it will be a 12V 1.5A that you need, but best to measure the actual voltage in the unit, to eliminate any error. Might as well measure your line voltage at your wall outlet while you are at it.
Connect negative from DC supply to - side of C47 and positive from DC supply to + of C47.
Hopefully it will help your hum. Are the signal lines in your snake shielded?

[markdd]

OK, I forgot this was a foot pedal unit which explains why you want it away from your amp. I don't see where the voltage drop will be, you will be bypassing the diodes. Unless the snake is very thin wire there should not be much drop in the cable.
Run the unit with the ac adapter and measure the DC voltage at the + end of C47 on the schematic (this is where you will be connecting your DC power). Choose a DC adapter (regulated) that puts out that DC voltage and is rated for 18 watts. Theoretically it will be a 12V 1.5A that you need, but best to measure the actual voltage in the unit, to eliminate any error. Might as well measure your line voltage at your wall outlet while you are at it.
Connect negative from DC supply to - side of C47 and positive from DC supply to + of C47.
Hopefully it will help your hum. Are the signal lines in your snake shielded?

Thanks,
For your assistance.
I appreciate your time, Your advise make sense to me.
I will try to obtain the units PS schematic and check the voltage @ C47.

....I tried the schematic link above but it no longer works.
Maybe Digitech will share it....fingers crossed.
Once I know the requirments I will invest in or build a nice regulated PS.
BTW: The snake cable is sheilded 4 pair Mogami W2931,
Is sheilded and I seperated the send and return grounds from one another to avoid gnd loop issues.
Thanks

Markdd

[Enzo]

The schematic in post #12 just opened for me.

I doubt the voltage is critical at all. power adaptors are never precision things. All the internal supplies appear to be voltage converters anyway. C47 is only a 16v part, so 12v or so ought to work just fine.

[markdd]

Thanks G-one and ENZO for help with my power supply issue.
I am now running my rp1000 using a 1500mz 12dc PS.
The snake turned out nicely.
Just as I envisioned . . . .

[Lostfollicles]

Oops! Sorry guys forgot to update thread!

I decided to change the the diodes to DB107S and change C22 C47 C90 & C107 105·c as Mozwell suggested!

It doesn't miss a beat now!

Thank you to every one on the thread for your help it was very much appreciated!

Regards Lostfollicles