Hello, Bugsy243 -
First, did you replace the batteries in the Laugh & Learn Baby Grand Piano?
If you do not know how to do that, this is the link to the instructions (PDF document):https://service.mattel.com/instruction_sheets/J9163pr-0920.pdf
You will need Adobe Reader software (free) for the PDF document. If you choose to save it after downloading, I suggest you save it to your Documents folder and give the file a name you can find later . . . something like: Fisher Price Baby Grand Piano. You can also print the instructions for easy reference.
The instructions for the toy state in the CARE section (page 2):
* This toy has no consumer serviceable parts. Do not take this toy apart.
Note: I do not find any other troubleshooting information (besides changing batteries) in the instructions.
Page 6 of the instructions provides the phone number for Fisher Price Consumer Relations:
9 AM - 7 PM (Eastern Time), Monday - Friday
11 AM - 7 PM (Eastern Time), Saturday
Note: This is the telephone number for the USA. The bottom of Page 6 of the instructions gives numbers for other countries.
After changing the batteries, if the toy piano still does not operate properly, I suggest calling Fisher Price Consumer Relations to find out if there are tips for correcting the blue key and sun hands problems.
Note: If you find the toy piano still does not work properly and choose to purchase a replacement, please send the non-working toy to electronics recycling.