This is a meant only as a loose guide for installing the cap kit, and for altering the audio to reduce the buzzing noise. Some experience required.
I now sell my own Vectrex cap kit, made with high-quality, high-temperature caps.

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I ordered my cap kit from Zanen. It came with all the parts listed on the roster, however, it was actually missing a few caps. I've since heard that this problem has been rectified.vectrex01

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(For audio buzz repair) Cut & tape off the ground wire on the 4-wire connector to the logic board. In this picture, it's the green wire, but apparently the wire color may vary. The board to the left of the tube is the power board, and the board in the bottom of the case (shown on right in this picture) is the logic board.vectrex04

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Closeup of connector / ground wire. Also, desolder the braided ground strap between the two boards.vectrex05

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Discharge the anode using standard techniques. The HV is around 5.7KV in the Vectrex. Not nearly as bad as a raster monitor, but not the kind of thing you want to pass through your body either.vectrex08

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Remove anode cap. Remove the ground lead that is held in place by the upper-left picture tube retaining screw.vectrex09

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Cut wire-tie from neck board, and remove neck board. There are 5 connections on the power board to remove: Power connector to logic board Yoke connector (if present) Audio connector to logic board Speaker connector X-Y connector to logic board Apparently, not all Vectrex have a connector for the yoke. In that case, you'll have to desolder the connections from the power board.vectrex011

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Remove the screws that hold the plastic power board retainer to the power board.vectrex018

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Start replacing caps. There are a few hiding under that heat sink. Replace them if you want, but they're probably ok. If you're going to do the audio fix, remove the connector for the audio input from the logic board.vectrex020
