Abstract: A lid assembly containing a lid gasket may be used to replace an existing lid assembly that forms part of a housing of an outdoor electronic device, such as an RF amplifier in a hybrid fiber-coaxial (HFC) network delivering CATV services to subscriber locations. The replacement lid assembly is configured to engage and cover an existing base of the electronic device, such as an RF amplifier, without disconnecting the electronic device (e.g., without interrupting CATV service). The lid gasket in the lid assembly may comply with current requirements and/or standards and is configured to engage the existing base adjacent an older gasket in the base to reinforce sealing of the electronic device housing. The lid assembly may also be configured to include improved or upgraded electronic components, such as an integrated power supply, and/or to provide improved heat transfer.