Oh no, Wotto is back into restoration
You can try cleaning the sockets with 360 grit sandpaper rolled into a cylinder. Also scrape away the crud from the spring (within the socket) with a small flat head screwdriver. Do this with the machine OFF.
Feature lights will most likely be the driver transistors on the Lamp Driver board. Can you list the feature lights ? It is easy to look up the transistor type and replace them. You can check the connectors and pins on the Lamp Driver board. These are easy fixes - you just need to get back into the swing of things again !
