can you repair whole mother board failures, thats what happend to one of mine when a tv set died with a bang and must of sent a surge down the av cable. no red ring just kept freezing up to start with on certain point of the intro on cod waw and then a few hours later started to do it on the loading of screen of the system.
i manged to get microsoft to repair it free even with out any red ring, thoe i didnt mention my tv set blew up at the same time my console died to
p.s the xbox was turned of at the time so ps3'ers dont be thinking the xbox killed the tv as it was the other way round. i like to think the falure rate of the xbox is due to the ps3 pixies coming at night and tampering with them due to there insane jeliousy

i also got a good deal on the xbox from currys that i brought to see me through the week it went for repair. just as the 60db version came out as well. i only wanted an arcarde one as i had harddrive ect and currys said they had one in and took my money and gave the recpit to only find they didnt have one in stock and neither did pcworld there partner shop on the trading est, so i manged to walk out the shop with a prem 60gb for £130 plus the free game that was part of the orignal deal