Ever wonder how you change a bulb on a PDP-12 console? Plastic tubing. The bulb for bit 0 of the memory buffer (MB) burned out after five decades. @mthompson of RICM told us that flexible tubing was used in the original tool. I cut off a little bit of tubing from our aquarium air pump and pushed the stretched end over the burned-out bulb. The original, 54-year-old bulb pulled out easily, and the new bulb (a Chicago Miniatures CM7370) was a little smaller, so it released from the tube right away. The printed bulb cover with labels (removed in one of the pictures) is plastic and sticks to the wooden board with Velcro dots. Maybe the easiest repair we have ever done! Thanks for the tip, Mike!
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