[Closed] Amp issues

hi all,

right i have a old (80's) aiwa amp. it was part of a stacker system but everything else is unused up in the loft.

its kept down the shed (which is dry but very very cold)wired up to my Jamo floor standers. I went to use it the other day and it switched on but no music would come out of the speakers!!!! im sure its the amp as the volume display led thing is lighting up and staying on MAX!

any ideas? its a good amp (for what i need it for) and i cant afford a new amp (saving for a house)

thanks shaun