The outdoor string lights does not work when plug in.
First please try to extra 1-2 turns even if the bulbs have been tightened. Then try to change the fuse and there is a spare fuse at the plug. Or you can try to use another power plug. If still does not work, please contact service support for help.
Individual bulbs are not work.
First please try to extra 1-2 turns even if the bulbs have been tightened. Second, install a good bulb on the socket that cannot light to check whether it is a bulb problem or a socket problem. If still doesnt work, please contact service support.
The fuse is burned out.
Please try to change the fuse and there is a spare fuse at the plug.