Har en original Deja-Vibe med 2,5mm barrel inngång fra strømforsyning.
er det noen som vet hva pedalen skal ha av strøm?
Polaritet, V, och mA?

Så här står det på Fulltones hemsida i manualen:

http://www.fulltone.com/sites/default/files/documents/fulltone-mini-dejavibe-mdv-user-manual-2010.pdf

9 Volt DC operation: Your MDV comes with the finest power supply available, the Fulltone FPS-1 wall-wart 9VDC power supply.
You may only use a 9 volt adapter having the Industry standard 2.1mm x 5.5mm sized barrel connector configured Center Negative.
The universal symbol for “Center Negative” (99% of pedals sold use this) is the following symbol:
If you use a pedalboard Power supply, make sure to use one that is “Regulated” and has “Isolated outputs” (for example: the Voodoo Labs
PedalPower2) so that exactly 9.0 volts DC is supplied. If you use a non-regulated 9VDC power supply, the MDV-2’s bulb will either be brighter
or dimmer than is recommended and will not perform correctly. Warning! Do not use any voltage other than 9VDC. The MDV-2 has circuitry
that converts the 9 volts up to 18 volts inside the pedal, using other than 9VDC will damage or destroy the MDV, and may cause a fire!

EDIT: Sorry, såg nu att du skrev original deja-vibe, antar att du inte menar mini deja-vibe då