line 6 echo park problems, help!

[z6a6k6k]

i have a line 6 echo park which used to work. now when i plug it in all it does is flash a red light, no output not nothing, just blink, blink, blink. has anyone else had this problem before? thanks.

[PostApocalypso]

Manual says, battery needs replacing:
http://line6.com/data/l/0a06000f162e...%20English.pdf

If you're running off a DC power supply I'd try switching supplies. FYI these Tonecore pedals are all digital and need a lot of juice, if running in a daisy chain, try powering by itself instead.