point A on messiah 2 mod fit

[steve p]

can any body tell me if point A on the mainboard for messiah 2 install has any thing to do with the lazer (DVD side)

my friend has just installed messiah 2 mod in V7 ps2 8 weeks old
he had problems from the off playing ps2 dvd dvdr but cd cdr play perfectly

asked me to have a look at it and the only fault i could find was point A on the mainboard was on the wrong side of the ressistor, repositioned and retried still ng

then cleaned his lens still did not made any difference
on further testing i also found that dvd films are not working also any cd cdr media work every time perfectly in psx & ps2 mode

this is leading me to think point A has something to do with the lazer in some way
can any body clear this up for me, and has he blown any thing or will lazer callibration rectify this