Fixing the LCD Clock Backlight

Recently I decided to fix my LCD clock backlight.

This is the "before" pic...


I wanted to match the clock light to the stereo so I bought a bright blue LED. The one I bought was a 8000 mcd from Dick Smiths, costing only $3. It required a 430 ohm resistor.

First step was to remove the dash as detailed in the r31skylineclub tech info. Once the dash is out and remove the clock...


The clock is two parts, to open it up just lift the two tabs on the top and the two tabs on the bottom...


This is what it lloks like once opened...


Now remove the circuit board from the back of the clock...


And remove the blown globe. It's circled in red and is twisted out...


Now, because I was changing the color of the light, I had to remove a green bit of plastic from behind the clock screen. To start with I had to undo the two screws in the red circles...


After lifting the circuit board of the clock, i had access to the plastic light disperser...


Lift off the light disperser...


And remove the piece of green plastic...


Now just put the circuit board back in and replace the two screws.
Now you have to connect the resistor to the LED.


Here is a diagram to help work out how this is done...


Now connect it to the circuit board where the old globe was. Positive is circled in red, negative in blue...


Now just put it all back together, reinstall the clock into the dash and replace the dash. Wait till night and admire your work...

Mine is a little bright, but does make it easy to read.

jay019

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