If the problem should occur with a World Adapter during using, it is simple to change the fuse.
Almost all Cents World Travel Adapter models have a spare fuse inserted in the product, or it can be purchased at electronic retailers and many online stores. To replace the fuse, take a screwdriver or a coin, place it in the slot found on the bottom of the device and lightly turn it anti-clockwise. Remove the old fuse and place a fuse of the same size into the holder, then fix it back into the device.
Step of changing the fuse:
Step 1: Find the Fuse location and Spare fuse first.
Step 2: Use a screwdriver to remove the old fuse.
Step 3: Use a screwdriver to take out the spare fuse
Step 4: Replace the spare fuse to the fuse location on the device