I just got my PS1 screen, but when i turn it on, it starts to flicker. I tried to bend the connectors of the screen, but no effect. I do use the official PSone power supply SCPH-114(7,5V 2.0A) I heard that the SCPH-121 power supply is originally sold with this screen, and outputs 7.5V 3.0A. Could this be the problem? Or is it still the connector or something els?
Maybe your PSOne and Screen are from different regions? PSU is not important at all. They are all 7.5Volts.
Yes, that's exactly what it looks like when you have a PAL screen connected to a NTSC console or vice versa - if your console is modded, try booting a disc from the other video region and see if that displays correctly. There is unfortunately not much you can do about this - the PAL and NTSC versions of that screen not only have different electronics, they have different display panels with different numbers of lines, too. So even if you modify the electronics you still end up with either a black bar at the bottom of the display (PAL screen driven with NTSC) or the bottom lines of the display cropped off (NTSC screen driven with PAL).