Power supply Voltage is too low for stable operation ?

[Marko James]

when I try to turn the board on this comes up (Power supply voltage is too low for stable operation please turn off and then back on) but it keeps coming up ?

 

[MaxK]

http://www.tascamforums.com/threads/tascam-dm-24-power-supply-fail.136/page-2#post-13485