What to do if the conductive carbon film on the circuit board of the electric piano is peeling off?

If the conductive carbon film on the electric piano circuit board is peeling off, you can try the following methods to repair it:

1. Use a soft pencil to apply the peeled off part of the conductive carbon film. This method may not be very effective because the soft pencil has a soft lead core that makes it difficult to adhere to the circuit board.

2. You can try to use transparent tape to stick the peeled carbon film on the board. However, it is important to note that transparent tape cannot completely replace the conductive carbon film, and can only be used temporarily in emergencies.

3. Consider replacing the board. If the repair is more complicated or costly, you can consider purchasing the corresponding circuit board for replacement.

It should be noted that the above method is for reference only, the specific operation needs to be careful, it is recommended to do under the guidance of professionals.