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This Graco 289135 Control Board Repair Kit (Ref. 1, 2, 3, 4, 5, 6, and 7 in the parts diagram) includes the PC board needed to replace your sprayer's existing board. Installation requires modifying resistor configurations based on your specific sprayer model—3900, 5900, or 200 HS—by cutting designated resistors as shown in the diagram.