[Tinyos-help] Iris not running on batteries

[João Paulo Amaro da Costa Luz Carneiro]

Hi,
I have mote which only works when connected to the mib520.
I installed blink on it and the lights blink correctly when connected  
to the mib520 but when I take it off the programming board and switch  
it on nothing happens.
I don't have problems with other iris motes running the same programs.
Has anyone experienced this problem? I believe it is a hardware  
problem and need to return it to crossbow, is this correct? I've found  
a similar case in the mailinglist archives with a micaz.
Best regards,

Joao