#1. Research before you buy! Do NOT make an impulse purchase. Just because the device costs more, doesn't mean it is better. Same is true for items that look like a great deal. Upon searching the internet, you'll be surprised to know which products and models get the most complaints.
#2. Know the retailer's deadline for returns and exchanges. Find out if you need the receipt in order to return or exchange electronic items. If the device breaks within their deadline, you can take your device to the store to get your money back or exchange it for the same item or better product. Why give yourself a headache by calling the manufacturer? Save your time and most of all- money!
#3. Do NOT take the sales associate's word. Usually, they just want to make a sale. The manufacturer's warranty is usually void when purchasing a floor model. It will not cover a missing remote! Also, most manufacturer warranties are void when the device is purchased as a gift. The warranty will cover a first purchase only- that means the original buyer with a receipt.
For the Do-It-Yourselfers
LCD TV not under warranty and need repair? GO HERE
Plasma TV not under warranty and need repair? GO HERE
XBox 360 Need Repair? GO HERE
Let me know if this helps you or if you have any questions.