Here is the back of the front panel. Behind the external panel is a Masonite panel to direct the light from the bulbs to the correct spot on the front panel. A few of the broken off bulbs are still in the holes. The long wires are where I had replaced bulbs but haven't yet cut the leads. Small spacers are used to separate the PCB from the Masonite. They were originally taped down with masking tape which doesn't age well so they will fall out when the PCB is removed.
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