#1
My fairly new DA5 only works from the wall wart, it will not run from the batteries ( I tested them with my multimeter, they are good)

Has anyone else had this problem, or is there a trick I don't know?

Thanks
Fender 60th Anniv MIM Strat (SD Little 59er Br)
Agile AL-2000 Rootbeer Flame (GFS Vtg '59)
Fender Hot Rod Deluxe
GFS Chorus
DS-1
#3
What setting did you test them with?
If you only tested for voltage, you won't have gotten an accurate reading. If your meter has a specific battery tester setting, then you've got a problem with your amp.