There are 8,000 - 10,000 parts to a typical piano, and many of them move.  Pianos are like cars in many respects.  Cars need regular service such as cleaning, oil changes, tuneups, wheel alignment and lubrication.  And, over time, some car parts wear and need to be replaced such as tires, brake shoes or pads, and engine belts among other items.  Pianos have parts that require regular maintenance, and there are parts that wear through normal use (or neglect!) that also need to be replaced.  
There is a difference between piano "repairs" and piano "tuning".   On occasion a piano owner will have a note that sticks - or won't play at all - and say: " I need to call a piano tuner".  Parts that don't work properly fall under the category of "Repair".  Repairing a piano problem  involves specialized knowledge, training, and tools.  So if you are having problems with your piano and fail to tell the piano tuner before he or she arrives, don't be surprised if you are informed there will be an additional charge for repairs, or worse yet the "tuner" is unable to make repairs.  Some piano "tuners" do not have the training, tools, or parts to make these repairs.  Piano "technicians" not only have the ability to tune your piano but also have the knowledge & tools required to make piano repairs.  Wilczynski Music has piano technicians who can handle all piano repairs in addition to tuning.   Most repairs can be performed in the home, but Wilczynski Music also has a fully equipped work shop.
Some repairs are minor and relatively inexpensive.  Others can be extensive and expensive.  Many repair problems can be avoided or at least minimized through routine maintenance by a qualified piano technician and by installing a  humidity control system in you piano.  E-mail us or write us if you have concerns about your piano.  And PLEASE tell your piano technician before-hand if you are experiencing problems with your piano.
Wilczynski Music Repair Shop
more about humidity control systems