So a little while back I got an MXR blue box second hand, I've been quite busy lately and it's just been sitting under a bed for a fortnight. I just plugged it in etc but every time I turn the pedal on the signal just cops it; nada.

Any ideas what could be wrong? My obvious idea was the battery so I checked it in another pedal. Seems to be fine.

Skeet UK is awesome, he can get WD Music parts discounted.