FLICKERING PROBLEM USING COMPOSITE AND LCD MONITOR
If, especially after a mod to add the composite (yellow-white-red RCA connectors), you happen to see, on the LCD monitor, a flickering and / or an abnormal color (eg purple) on the screen:
do not worry, it may not be the fault of the poorly made mod but simply of the LCD panel which is more "sensitive" than others: try it on other models; if the problem disappears it is due to the LCD monitor and not to your working hand