....you need to change a burned out light bulb! Then the socket assembly pushes up inside the hood and the only solution is uninstall the hood, take it apart to gain access to the socket assembly and insert it back in place........and then, being very careful not to displace socket assembly again, screw in the replacement bulb. Of course then you need to re assemble the hood and reinstall the hood. This same issue has presented itself nearly every time a bulb needed to be replaced. (Have owned 6 years) Even searching with a flashlight/mirror and/or fishing with a wire to "catch" the socket assembly do not work. Removal and disassembly is the only solution. Avoid the frustration by not buying.