1. My Speedlight 430EX II was still working perfectly with only the LCD display cracked. The back-light was also still working.
    • My Speedlight 430EX II was still working perfectly with only the LCD display cracked. The back-light was also still working.

    • Order a genuine replacement part from www.DHcameras.com.

    • Make sure you have a very good set of tools. The screws on this flash are very soft and a none matching driver will strip them.

  2. Remove batteries
    • Remove batteries

    • Remove the 4 screws at the bottom of the flash

    • Remove mounting cap on the side of the flash

    • Carefully unplug the socket from the circuit board.

    • Turn the flash head 90º.

    • Remove both screws right below the 75 mark. These are the screws holding the smaller back casing in place.

    • READ THIS!!!! This is not a "the bigger the hammer the smaller the problem" step. You mess this up and you will need to duck-tape your flash back together. Also...: make sure you don't snap a plastic tool.

    • Looking flat into the opening you should see a metal part far in.

    • With a flat driver try to get between the plastic casing and this metal part to pry it out of the locking notch.

    • Image 3 illustrates the metal tab you need to press down for the side to open.

    • One more time: Make sure you are getting between the casing and the metal tab. Inserting and twisting a small screw driver worked for me after a few tries.

    • Remove front casing with infrared sensor by removing one plug.

    • Detach 3 wires going from flash head to circuit board.

    • Remove brown and yellow wire from circuit board connecting the battery case.

    • Gently pull flat band out of the circuit board mount. You might use the pliers but don't bend the band.

    • Move the 3 wires out from the gap between the casing and circuit board.

    • First: White

    • Second: Orange

    • Third: Black. This is the one we need to free.

    • Now the back casing with circuit board should come lose. Only attached by the black wire.

    • Also pull out the 2 metal mounting plates.

    • Remove 5 screws holding the circuit board.

    • Remove screw holding metal tab. The screw is different than other 5. Make sure you leave it in the tab.

    • Remove screw holding plastic cap. Keep screw in the cap as it is a different size.

    • Take the circuit board out of the casing flipping it over.

    • There is a clear plastic plate (red) between the LCD and the circuit board. It might fall out. It is used to distribute the back-light.

    • Pull the old LCD off carefully. Make sure not to tear the rubber band (green). This is used to transfer the signals from the board to the LCD.

    • Cut the side of the plastic wrapping of the new LCD. Slide it out of the plastic bag directly into position. Make sure you don't touch surface with your fingers.

    • There are 2 tabs (red) the new LCD needs to slide under.

    • Now place the clear plastic plate on top of the new display. MAKE SURE it is in the correct orientation. In the image the BLUE notch is a bit larger than the orange one.

    • Press the edges of the plastic lightly and it will snap into the case.

    • Remove the rubber band gently from the old LCD and place it into the groove (image 3, red). Make sure it is aligned correctly.

    • Place circuit board back into the casing and attach all screws.

    • If positioned correctly the rubber band will make connection between the new LCD and the board.

    • Push the wires back between the side casing and the circuit board. The order is now reversed: 1st Black, 2nd Orange, 3rd White.

    • Re-attach all connectors onto the circuit board except the flash base.

    • Insert batteries and hold the cap closed with your fingers. It will not snap closed until the casing is back together.

    • Turn on the flash and check if the LCD works. Push the back-light button (above Pilot) to make sure it works.

    • After the test remove batteries.

    • Re-attach the front casing wire for the infrared sensor.

    • Make sure the plastic foil is back in place the correct way around.

    • Put the flash head back between casing halves and snap them together.

    • Attach them with the top screws byt the 75 marks.

    • Run one more test by inserting batteries. The battery cap should now snap closed.

    • Turn the flash head and make sure all mechanics work including the tilt.

    • Re-attach the wire of the flash foot and put in the 4 screws.

    • Congratulations!!! You just fixed your speed light LCD.


To reassemble your device, follow these instructions in reverse order.

14 other people completed this guide.


Member since: 04/27/2010

482 Reputation

1 Guide authored


Whohoo, great! My flash has a new display. THANK YOU!!!

alizr hort - Reply

My backlight did not work during the first try in step 9, but it did after putting it all back together. Thanks a lot!

alizr hort - Reply

Did you find out what went wrong with step 9?

midiman127 -

Many thanks for this superb Step By Step. It worked! Keep up the great work.

cyberK - Reply

You are very welcome. I like to see other very bold people out there fixing stuff!

midiman127 -

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