I have a '00 that just developed the blank display syndrom. From all these good inputs, locating the display power supply (the small board mounted to the left side of the CD chassis and connected to the display by a small cable consisting of blue insulated wires) was not much of a problem. Examination of this board from the bottom side showed some heating and with a 5X jewelers loop a person could see broken solder joints. Soldering these joints, especially those associated with the serface mounted components took very a sharp soldering iron (taking a standard Radio Shack type, 25W and sharpening the point so that taper starts about 3/8" to 1/2" from the tip worked very well). After reflowing, and adding solder in some cases the display works as new.

Now then for the fix: Obiousely the display power supply is running at a high enough temperature to damage the solder joints but not so high as to damage the components. Solder will remain structrually sound to about 230 degrees F. any substantual increased temperature will weeken the joints allowing the mass of the component, thermal expansions and contractions and residual stress from the origional soldering event to tear the joint apart. Or in other words the newly soldered board will fail in a month, 6 months, or maybe if your lucky several years if steps are not taken to cool the board. At www.pricewatch.com several vendors advertise fans as small as 1" square. With file a 1" square fan will fit at an angle from back to front over the front of the power supply board. Using a little 5 minute epoxy the fan can be secured to the chassis and connecting the fan power between the ingition on power (at the radio connector) and ground (the chassis) will cause the fan to run any time the ignition is turned on. The drawback to this fan is, it can be heard when the ignition on and the engine not running.