andrewb
Well-known member
Hi Nethawk86, I'm wondering if you can comment some more on how your Tempest image became mirrored, and exactly how you fixed it.
I'm looking into reversing mine on purpose for use in a mirrored cabinet. Thanks!
If you want to force your board to mirror the image, there are two pins on the edge connector that do this. See the pic from the schematic below. The board outputs two signals (OUT3 and OUT4), which are looped back into the board, and control the X INV and Y INV signals, which flip the X and Y axes of the image (via other circuitry in the video section).
If you want to control these manually, you just need to cut those two wires (or pull the pins from OUT 3 and OUT 4, so you don't have to cut the wires), and rig up two switches that let you either ground X INV and Y INV, or let them float. (in which case they'll be pulled high by the board). Then you can use the switches to manually flip either axis.

You could also flip either axis at the yoke (not using the RGB signals, but rather the wires on the deflection board that actually drive the yoke, on the 4-pin connector that goes to the yoke. They're actually red, blue, yellow, and black.) Red and blue control one axis, and yellow and black control the other. So swapping red with blue will flip one axis, and flipping yellow with black will flip the other.
