How to Troubleshoot the Mic Input Jack on a Casio CDP 200R?

If your mic in jack isn't working on your Casio CDP 200R and you suspect it might be shorted out, it likely indicates a hardware issue. Given that the piano is about six years old, it’s possible that the jack has worn out or sustained damage over time. Unfortunately, if the jack is indeed shorted, you'll need to replace the M810-JKA1 PCB board for it to function properly again. A factory reset won't resolve this issue since it’s a hardware problem. Finding a replacement board can be tricky, especially for older models like this one. I recommend reaching out to an authorized service center to get a proper diagnosis and repair estimate. They can provide you with information on both the cost of the new board and the labor involved in the repair. The mic in jack is soldered to the M810-JKA1 PCB board, so it’s best to have a professional handle the replacement. If you’re located in [REDACTED CITY], you can contact The Time Machine for assistance. They should be able to help you with the repairs. Make sure to ask them about the total cost, including both parts and labor, so you have a clear idea of what to expect.