I can't tell you the number of times a friend or member of my family has noticed that something they own isn't working as well as they wanted, and they have simply thrown it away or immediately taken it in to be repaired. An example of this is a computer problem we, which prevented it from starting up. One of the people who noticed the problem immediately gave up, and began making plans for it to be taken in to be serviced. However, when I noticed the computer wasn't working, I went to my laptop and typed the problem it into a search engine. Lo and behold, there were hundreds of pages listing the same problem, and various fixes. After about 15 minutes, and a tiny little bit of tinkering (following the instructions given online of course) the problem was solved.
The point I am trying to make is that before you head out to get your computer, or blender, or whatever it may be repaired, do a small amount of research on the problem. It takes no more than 10 minutes to assess whether or not you are capable of fixing it, and quite often you will find simple step by step instructions on what to do. If you are unsucessful in your search, then all you have lost is 10 minutes of your time, and you can take it in to be repaired as you had initially planned.
Note: If the product is under warranty, please don't do anything such as pulling it apart and voiding the warranty. If the problem is too complicated, please don't make the situation worse. The point I am trying to make is simply that it may be easy to solve, and it could save you a pretty penny. I take no responsibility for any bad decisions made regarding voiding warranties or further damaging the item.