How do you fix the overhead compass temp display on a 1999 Ford Explorer?

Answer 1

I had the same problem. I was able to do it myself using the instructions with pictures at http://www.explorerforum.com/forums/. Specifically, you can get there at this link:

http://www.explorerforum.com/forums/showthread.php?t=187953

The instructions are detailed with pictures that show the whole process. This writeup was done several years ago by the guy who discovered this fix and it's been free the whole time. There are hucksters out there who have copied this fix and are charging for it. Fairly easy fix (you may want have to learn to solder, but there are instructions regarding that too).

Additional information:

I had exactly the same problem where the unit suddenly went blank. Here is the procedure:

1- Press the mode switch several times to make sure it is not in the blank mode. OK? keep going.

2- Check the 7.5 A fuse number 10. OK keep going.

3- Remove the two screws holding the unit to the ceiling and pulled the unit

from the front to release the two clips.

4- Use a T-10 torx bit to disassamble evey thing in the unit and to

get to the printed circuit board.

5Look for two surface mount resistors next to each other with 510 printed

on them. Check to see if they desoldered themselves off the board.

6- You can resolder them or replace them. I resoldered mine.

7- Use two 68 ohms quarter watt resistors (to reduce power disspation)

and solder them in their place.

8- You can check your work by attaching the board to the wire harness and

to the plug in the ceiling and turn ignition on.

9- If everything is Ok (as I hope) disconnect the board and reassemble the

unit and install it back.

Hopefully this will help someone in the future.