Cause & Possible Fixes for Whitescreen + D-Pad failures (a new thing to try)
First, it'd like to thank
for pointing out something important that narrowed down my testing.
Now, onto the problem Symptoms :
- D-Pad, IE and Email buttons cease to work
- Screen fades to white or comes back from standby as white
- Display is slight disaligned to the side, 1mm of left appears on right side.
- Randomness in all above symptoms.
Cause : It is the D-Pad connector.
Yes, the D-Pad connection DOES cause the whitescreen. It's odd and illogical, but this is the conclusion I have reached.
ALL the previous guides, such as sliding plastic between the screen and casing, were randomly moving things inside.
By CHANCE ONLY it'd affect the D-Pad connector positively. That is why such solutions only worked for a few people temporarely.
You will need to try variants of the following things :
- Tightness of the screws over the connector
- Disconnecting the plug and reconnecting it very carefully
- Pressure over the bibbon between the D-Pad connector and the screen.
- Pressure over the D-Pad connector itself
- Tightness of the screws over the D-Pad PCD
- Tightness of the screws closing the plastic casing of this part of the phone
To stress-test the variants, I ran a D-Pad intensive game (Skyforce)
for 30 minutes or until the symptoms came back.
I've played around with all those, giving mixed results, but definitively making a difference.
My final and best result was by putting a thin foam piece over the blue parts in the picture below. (Ignore the red circles, original picture is taken from a website)
The foam I used was the typical foam sheets you find in packaging for fragile electronics such as motherboards, hard drives, graphic cards etc. It has to be super thing in other to close the casing without buldges.
There isn't a specific thing you can do that will make your D-Pad be reliable and the whitescreen to go away. You'll have to do several tests, so I recommend you keep your phone disassembled while testing. The connector is VERY VERY SENSITIVE. That is why I cannot be any more precise in how to fix this. However, you NOW KNOW what causes the screen to freak out and buttons to stop working.
What I did for testing :
I have tested my phone while it was completely disassembled. Meaning I had the back of the monitor open, as seen in the picture above.
That way, I could fiddle around and instantly test the result.
I've fiddle with the cables, the screen pressure, everything. Nothing returned the screen from being white or becoming white.
Putting pressure D-Pad connector's ribbon or actual pin caused the screen to either turn on white, or fade to white. (Results often noticed only after going in & out of standby)
It also caused my D-Pad buttons and the top 2 buttons (IE & Email) to either work or not work.