2. If the key is stuck, you can try to loosen it by gently prying it up with a flathead screwdriver. Be careful not to damage the key or the surrounding keys.
3. If the spring is broken, you will need to replace it. You can find replacement springs at most music stores or online.
4. If the contact is dirty, you can clean it with a cotton swab and some alcohol. Be sure to let the contact dry completely before reassembling the key.
5. Once you have repaired the key, test it to make sure it is working properly. Play the key several times to make sure it is not sticking or making any strange noises.
If you are not comfortable repairing the key yourself, you can take your Valdesta digital piano to a qualified technician.