Help! Late last night I was listening to the radio on my Sony DB940, when suddenly the message WARNING WARNING! flashed up in the display. Has anyone ever had this message on there amp before? The volume was very low and the amp is only about 6-8 month old... This is the first time I have recieved a waring message, any idea what it could be.... I checked the manual but couldn't find any reference to this message. Please don't tell me it's on it's last legs already!