Should I send my xbox 360 to the repair centre direct, or should it leave it with the retailer (Harvey Norman)?

You should not send it to Microsoft or retailer as that will take lots of time and you have to pay them $150 to get Xbox 360 repaired if its warranty has ended. I would suggest you repairing it at home following the easy to follow guide available on a href="http://repairxbox360problem.blo.com/" rel="nofollow"http://repairxbox360problem.blo.com…/a website. You don' need any technical skill to use this guide. Once you have this guide, you will be able to repair your xbox 360 for free at home