Roland SDE-3000a possible issue...

[Andy Jackson]

Hallo folks!

Just a quick one, this...

I have acquired an SDE-3000A digital delay unit. Seems all OK, but...

When you plug in a playmate pedal, or patch change pedal, or in fact ANY of the remote switchables at the back, the unit front panel seems to be 'disabled'. I'm just wondering if this is normal behaviour. I don't reckon it is, as you may want to tweak some parameters on the fly?

Anyone got any experience with one of these, that can maybe shed some light?

Cheers guys!

Best Wishes,


Andy.

 

[Andy Jackson]

I think I've found the issue - the pedal I'm using isn't a proper switch per se, so the unit thinks there's an open circuit and freezes, until you remove the pedal, even though it's switching the unit as it normally would.

When I put in a TS jack into the Playmate Pedal socket, and bridged the wires - then opened them - then bridged back again - the function worked and I was able to do front panel adjustments, after 'tapping' in a delay. All of the other function sockets worked too, tested this way.

Confirmed the result by repeating above, but left wires open circuit. Fault appeared.

Sorted.

 

[Gene Pink]

I think I've found the issue - the pedal I'm using isn't a proper switch per se, so the unit thinks there's an open circuit and freezes, until you remove the pedal, even though it's switching the unit as it normally would.

The Roland delay pedals are "normally closed" and the jacks have contacts to short them out when nothing is plugged in. Stepping on the pedal opens the circuit.

Perhaps your present non-Roland pedal has a microswitch that has both N.O and N.C. terminals,  just change one wire from NO to NC.

Gene