Ps2 messiah 7; 23 wire mod chip
 

I have recently installed a messiah 7 mod chip in a version 7 ps2 #39001. trying to boot up known good cd back up games with no luck. original games work fine. Is there a boot up procedure I may not be aware of. Confident I made all connections per ps2 kingdom diagram. 23 wire solder modification. Is this websites diagrams accurate. Thanks!

If it's the same as the guide on www.messiah2.com then yes.

doesnt the messiah 2 have 24 wire points?