A machine's brand name does not mean all its parts are composed of the same brand. Parts and pieces may have built through other brands. These other brands should still be compatible to the actual unit though. As mentioned on the paragraph above, choose what is best according to most users. You can trust the opinion of experts and professionals with repairs.
If, however, you're having trouble putting your finger on exactly what the problem with your machine is, it can be nearly impossible to devise an appropriate washing machine repair plan. In that case, you have three options: Put up with the problem and hope that it goes away, Get rid of the malfunctioning unit and purchase a brand-new one; or, Find a washer and dryer repair technician who can help you diagnose and treat the problem. Obviously, there are pros and cons for each of the scenarios outlined, so it will be up to you to consider your budgetary constraints and any other important factors before making a decision.