In both the Gottlieb System 1 first time power on procedure video and Gottlieb System 1 Repair 1977 to 1980 instructions (1977 to 1980), they both reference replacing the existing filter cap on the power board (2900 uf / 12v) with a 6800 to 10000 uf / 50v cap.

This requires a modification to the board and I have never done this kind of work before. Is this update absolutely necessary and what is the downside to not doing the upgrade? If the upgrade needed is 6800 uf OK or is 10000 uf preferred?

In the interim, can the voltages be checked on the board per the video or do I need to hold off for now?

If cap replacement is required, the existing cap is axial (wires at each end) while the new caps I am seeing on-line are have snap connectors on one side. Are there instructions / videos anywhere showing how to do the actual modification.

Many thanks for the help

Was not looking to replace the board unless sbsolutely necessary.

Still need to understand what the issue is with the 2600 uf / 12 v cap and whether upgrade is a must or nice to have.

If yes to upgrade which one ... 6800 or 10000?