Repair Service Only for Graco Airless Paint Sprayer model GMax 3900, 5900, 7900 Electronic Pressure Control Board. Note: If you have questions on other Graco Control Boards please feel free to ask.Yes, I do repair other Graco Boards. The item "Repair Service for Graco Control Board for GMax 3900 Part # 245394" is in sale since Friday, January 4, 2019. This item is in the category "Specialty Services\Restoration & Repair\Electronics". The seller is "ee30043" and is located in Lawrenceville, Georgia. This item can be shipped worldwide.