Sounds like you need to set your G2 level. Do you have an option in the "Service" menu called "G2 Adjustment" ? If you do, select it and follow the directions. The green LED's are located on the board attached to the necks of each crt, and the G2 drive adjustment screws are found on the card on the far side(same side as the power cord) in the rear card compartment. They are three white plastic very small adjustment pots with the tops painted red, green and blue. If you don't have the "G2 Adjustment" option in your service menu, you can still set your G2 levels with the pots, but the procedure is more involved, and not one I'm capable or qualified to explain, You'll need the service manual for your pj for the exact procedure.