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Download Instructions
LCD Backlight Installation Instructions.
 (Click on images to view larger pictures.)
If your kit is new, try to keep the blue protective film that was shipped on the screen in place as much as possible for the installation. This will help protect the front of the screen.
The EL sheet can be bent slightly. Bending too much will damage the sheet. Do not remove the clear lamination from the back of the EL Sheet, this insulates the high voltage from arcing over to the LCD's Electronics.
If Possible, test the sheet for proper operation before installing by hooking the Red wire to + and BLACK wire to - with the correct operating voltage.
Do not unsolder the wires from the back of the EL Sheet. To much heat will permanently damage or ruin the sheet. I put a very flexible, shielded, conductor connected to a little PC board for connection and modifications.
1. Make note of the notch in the metal frame and the bump on the LCD's glass.
2. Remove ribbon cable and button assembly to allow easy access.  
3. Flip LCD over on its face. put some cloth down to protect the front of the screen if the protective film isn't there. It has a polarized plastic film and can be scratched.  
4. Unbend the 8 tabs holding the ring on .
5. with light pressure push the tabs through the board until the screen is loose.

6. Lay parts out in the way they came apart so they can be assembled easier.
7. With the razor blade lift up the silver mylar and the plastic polarizing film. Be careful not to damage the rubber strips on the sides of the LCD. These are the signal conductors. (Be careful not to cut yourself)

8. Once the film is removed clean the glass where the film was stuck to remove any leftover glue. I use Ammonia or a glass cleaner with ammonia.  
9. With glass cleaned, Put LCD back into the metal frame. Look for notch and bump alignment.
10. Set screen face down with the bump to your right. Put the PC board over the screen,Contrast adjuster will be pointed away from you. Now slip the metal tabs through the notches.  
11. With light pressure push down on the PC board to compress the rubber conductor strip until the tab can be bent back into position.

12. Repeat going left to right or vice versa, doing all the bottom then all the top.  
13. Flip the assembled LCD and board over.and slip the EL sheet into the gap between the metal frame and PC board.
14. Slip the polarizing film between the metal frame and the EL sheet.
15. Congratulations your done!  
Possible Problems.
1. Screen is garbled. This can be caused by two things.
  1. The LCD was installed upside down. (check notch and bump)
  2. There was lint or oil from your hands that is insulating the rubber conductor between the LCD and the PC board.(Remove screen again clean PC board contacts and rubber conductors with a clean lint free cloth.)
2. Can't see letters.
  1. Polarizing film not installed.
  2. Contrast not adjusted properly.
3. EL Sheet won't light up
  1. Too much heat or flexing was done on the shielded cable coming from the EL sheet and may have caused a short. Check with a meter, should be more than 30 ohms.
  2. No power to the Inverter. check for proper voltage at the black and red leads.

Last Updated on 4/6/2004
By Len Averyt
Email:
Techknowman@techknowman.com