FAQ crt related issues

Working on a CRT is dangerous, It uses high voltage capacitors to
power the tube. If you are not sure what you are doing find a tv tech.

The pi2jamma / pi2scart is designd for 4:3 crt screens. It is possible to use 16:9 but you wil get black bars on the left and right side of the screen. Retrogaming is designd for 4:3 aspect ratio.

Image is tilted (left is higher then right):
2 options: go to the menu of the tv and search for the tilted option.
Or, the yoke of the screen is not correct.

Image is not that clear/colors are not correct

Check the settings of the color/crt and the image. pi2scart/ pi2jamma is designed to provide a picture clear image.

Image is bouncing up and down very fast (left to right)

H sync or V sync of the crt need to be adjusted. for this you need to
a crt tech.

My image is out of bounds of my creen.

Firstyou can play around with the HDMI_timings setting,
second you can enable overscan and push the screen around.

disable_overscan=0

overscan_left=16
overscan_right=16
overscan_top=16
overscan_bottom=16

you don’t have to start with 16, you can play around with the settings. You are also able to only push from one side. if you # comment a line then the linux will not use it.

disable_overscan=0

overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

in this case it wil only use overscan from the left.