Hello I got the Hitachi PMA 400 Plasma screen. The fan was getting a bit loud so i want to replace it. But no other fan seems to give the right rpm signal to the screen. So my question is, how do i bypass the rpm monitor that switches the screen off when there is no signal. Anybody got the schematics for the psu, or have done enything like this. Or somebody know who might know, plese help me!