Jailbars-Video-Fix for Sega Master System M4
WORK IN PROGRESS!!!! This is not fully working yet!!!
The SEGA Master System console in this particular revision (M4) is plagued with vertical stripes in video-output called 'jailbars' caused by interferences from the clock-line.
Install: Remove the V7040 RGB-Encoder IC. Install a SONY CXA1145P on my pcb. Cut the red, green, blue and csync connections from the VDP (315-5124) and wire the signals directly to my pcb. You can use pin-headers to install this pcb onto the mainboard where the V7040 was located.
C1, C2, C3 = 0.1uF (104Z/16V)
R1, R2, R3 = 2K2 Ohms
R4, R5, R6 = 3K3 Ohms