Yeah its worth a Punt i guess,but i just don't see them giving him a replacement,they might tell him where to send it for repair and that will more than likely be Sony.
I took a Dyson Vacuum cleaner back to currys that was not fit for purpose,we only had it 12 days and you should have seen the fuss and confusion that arose when i arrived.
I actually spoke to Dyson direct before returning this product to Currys,they actually rang and spoke to Dyson before eventually agreeing to exchange it.
And that was a the latest upright vacuum from Dyson that worked on some carpets but not others,heads stop spinning as soon as it went on a carpet with any sort of decent pile,and you needed muscles like Arnold Schwarzenegger to push the dam thing...