Inputs not working on skytec pro 240 amp

Hello there

i have two of the above amps and the inputs on the left hand side on both have stopped working (both phono & 1/4 inch jack) im getting no sound at all from either one , the sound is perfect in the right hand side
[IMGHTTPDEAD]http://img2.imagetitan.com/img2/small/42/42_back.jpg[/IMGHTTPDEAD]

On the front the led light isnt working either (to indicate sound)
[IMGHTTPDEAD]http://img2.imagetitan.com/img2/small/42/42_front.jpg[/IMGHTTPDEAD]

My question is what could be wrong

regards in advance
stuart