You should be able to change it. See if there is an after-sales store for the rice cooker you bought. Then you can call first to ask. You can take the invoice or after-sales card and rice cooker to the designated after-sales repair shop for repair. If it is still under warranty, you can repair it for free. If the warranty expires, ask how much it will cost to repair it first. If it is not expensive to repair, it is better to buy a new one directly.