yamaha dsp-ax620

[deanr2005]

hi there
just wondering if you can help me but i have a yamaha dsp-ax620 and everytime i switch it on it turns itself off.
when i switch it on it stays on for about a second or two then just switchwes itself back off.
i havent moved it as it just happenned the last time i turned it off then back on again.
any help will be much appreciated.

[THERAAAVEN]

checked no cables are tuching ie lose wires especilly the speakers - think this could be the auto cut off thingy if bare wires are touching