I attempted an install of a Matrix Inifnity on a V12 Slim and now the red light wont show.

Checked all the fuses with a multimeter and all the fuses are showing continuity.

I have no idea what the problem is. Worse case is i replace the motherboard for 70 bucks. Any advice.

I checked the PS1 fuse and it shows continuity like the repair guide on this forum said to check when the red light wont come on but its still good or so it seems.