Sky plus stuck on Standby after reset!?

Hi
I tried the front panel reset of my Pace TDS 470N 80gb but when i put the power back on while holding the front side arrows the green light came on but didnt go round. I kept holding for a good couple of minutes but nothing so i pressed select the green button in the middle turned red then it switched itself off. I waited for about 10 mins to see if it powered back up but it didnt. So I switched off and turned back on again but it is still stuck on standby. Help