Post by badshah on Oct 24, 2008 0:38:21 GMT -5
My dash clock passed a long time back, the LCD was blank. So I decided to take it apart and see for some obvious problem.
Remove the radio knobs and the two nuts behind them, remove the radio bezel.
Remove the A/C knobs and the plastic plate behind the knobs, by sliding in a small flat screwdriver in the A/C control slots and pushing out.
You would see four screws holding the plastic assembly that holds the clock, remove them.
Pry the plastic assembly out and remove the four pin connector behind the clock. You may also have to remove the cigarette lighter connectors.
The clock is held with four plastic tabs (2 top, 2 bottom) carefully remove it.
Remove the bulb behind the clock, by turning counter-clockwise.
After moving the clock to your bench, remove the three screws on the front of it (2 top 1 bottom) and lift the black face out (it is also held by four tabs on the sides)
Turn it backwards so you are looking at the PCB behind the black cover, remove the three screws on the PCB and while making sure that the clock face is facing down, remove the PCB upwards.
The LCD assembly should be in the black cover now and visible, don't turn it over as it may fall out and the zebra connectors get disconnected from the screen.
I don't have any denatured alcohol etc, so I put some perfume on a cotton ball and cleaned the zebra contacts and the black contacts of the LCD on the PCB.
Put everything back and hopefully it should work. Well mine does now.
Please remember you have to assemble the PCB with the screws before testing, as the zebra strips have to be compressed by some amount for proper contact.
Problems:
You turned the assembly over and the LCD came out.
The LCD has four components
1- back cover which I think is the polarizer, greenish yellow in color.
2- 2 x zebra-strips (elastomer connectors)
3- LCD screen
If the zebra strips came out, then sorry i don't know how to put them back.
Problem is that there is no marking on the cover to indicate the directions.
Do the following.
Problem 1:
If only the polarizer came off, then look through it towards a light source, you would see something like
18:88
place it over the LCD, so that when viewed from front of clock the polarizer digits would appear correct. Press down lightly till it settles. Mount the PCB with the screws and test. If it does not work try flipping the polarizer and remounting it while maintaining orientation.
Problem 2:
If the LCD came out, then place the LCD in the black cover with the zebra strips facing up, then repeat steps for problem 1. If it does not work remove LCD by carefully prying on the edges, rotate 180 degrees and repeat. If it still does not then sorry
Hope it helps someone.
Remove the radio knobs and the two nuts behind them, remove the radio bezel.
Remove the A/C knobs and the plastic plate behind the knobs, by sliding in a small flat screwdriver in the A/C control slots and pushing out.
You would see four screws holding the plastic assembly that holds the clock, remove them.
Pry the plastic assembly out and remove the four pin connector behind the clock. You may also have to remove the cigarette lighter connectors.
The clock is held with four plastic tabs (2 top, 2 bottom) carefully remove it.
Remove the bulb behind the clock, by turning counter-clockwise.
After moving the clock to your bench, remove the three screws on the front of it (2 top 1 bottom) and lift the black face out (it is also held by four tabs on the sides)
Turn it backwards so you are looking at the PCB behind the black cover, remove the three screws on the PCB and while making sure that the clock face is facing down, remove the PCB upwards.
The LCD assembly should be in the black cover now and visible, don't turn it over as it may fall out and the zebra connectors get disconnected from the screen.
I don't have any denatured alcohol etc, so I put some perfume on a cotton ball and cleaned the zebra contacts and the black contacts of the LCD on the PCB.
Put everything back and hopefully it should work. Well mine does now.
Please remember you have to assemble the PCB with the screws before testing, as the zebra strips have to be compressed by some amount for proper contact.
Problems:
You turned the assembly over and the LCD came out.
The LCD has four components
1- back cover which I think is the polarizer, greenish yellow in color.
2- 2 x zebra-strips (elastomer connectors)
3- LCD screen
If the zebra strips came out, then sorry i don't know how to put them back.
Problem is that there is no marking on the cover to indicate the directions.
Do the following.
Problem 1:
If only the polarizer came off, then look through it towards a light source, you would see something like
18:88
place it over the LCD, so that when viewed from front of clock the polarizer digits would appear correct. Press down lightly till it settles. Mount the PCB with the screws and test. If it does not work try flipping the polarizer and remounting it while maintaining orientation.
Problem 2:
If the LCD came out, then place the LCD in the black cover with the zebra strips facing up, then repeat steps for problem 1. If it does not work remove LCD by carefully prying on the edges, rotate 180 degrees and repeat. If it still does not then sorry
Hope it helps someone.