Identify the Cause of the Stickiness
Sticky keys can be caused by various factors, such as dust accumulation, moisture, or mechanical problems. Check if the keys are dirty or have foreign objects stuck in between them. If the keys are clean, try playing them to see if there are any mechanical issues. It’s also essential to determine if the problem is widespread or specific to only a few keys.
Clean the Keys
If the stickiness is because the keys are dirty, cleaning them can help solve the problem. Use a soft cloth or a feather duster to remove any dust or debris. If the keys are particularly dirty, use a damp cloth with a mild soap solution to gently wipe them down. Avoid using harsh chemicals or oversaturating the cloth with water, which can damage the keys and the internal mechanisms.
Dry the Keys
After cleaning, allow the keys to dry thoroughly before playing. Wipe them down with a dry cloth or let them air dry for at least an hour. If you’re in a hurry, you can use a hairdryer on the cool setting to dry the keys faster. Avoid using heat, as it can damage the keys’ finish and internal components.
If the stickiness is due to mechanical issues, such as friction between the keys and their housing, lubricating the keys can help. Use a small amount of a specialized piano key lubricant, such as Fallboard & Key Dip Lubricant, to lubricate the sides of the keys where they contact the housing. Avoid using silicone or other non-specialized lubricants, as they can damage the keys’ wood and felt components.
Call a Professional
If none of the above steps work or if you’re unsure about performing any repair yourself, it’s best to call a professional piano technician. They have specialized training and equipment to diagnose and fix piano problems, including sticky keys. A technician can also perform more advanced repairs, such as replacement of damaged components or regulation of the keys for better overall performance.