TFT Screen White only

Post test messages here

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
User avatar
ped2004
 
Posts: 3
Joined: Tue Jun 30, 2015 4:35 pm

TFT Screen White only

Post by ped2004 »

Hi,

We have a 2.8 in screen and a 3.5 in screen. The 2.8 is working fine and so did the 3.5 when we first received it. Currently the 3.5 in only turns white when powered.
We have followed the forums and have the ready-to-go image for the TFT kernel.

Any other suggestions?

THanks

User avatar
adafruit_support_mike
 
Posts: 67446
Joined: Thu Feb 11, 2010 2:51 pm

Re: TFT Screen White only

Post by adafruit_support_mike »

Post a photo showing the back of the PCB where the flex cable fits into the connector. 800x600 images usually work best.

User avatar
ped2004
 
Posts: 3
Joined: Tue Jun 30, 2015 4:35 pm

Re: TFT Screen White only

Post by ped2004 »

Hello,

It does look like that connector might be the culprit.

1. the surface mount connector slid a bit in re-flow.
2. I'm not sure if the ribbon is completely connected at the top (pin 1)

Circled black part is free floating where the other side is connected at point 2.

Is there something I can do to get this working?

Thanks
Attachments
3.5in screen.JPG
3.5in screen.JPG (63.67 KiB) Viewed 647 times

User avatar
ped2004
 
Posts: 3
Joined: Tue Jun 30, 2015 4:35 pm

Re: TFT Screen White only

Post by ped2004 »

Checking with my meter pin 1 was not connected. Fortunately I was able to pull out the black piece on the connector that clamps the ribbon and reset it in there.
Re-checking with the ohm meter pin 1 is now connected. Plugged the screen back into the pi and still white screen. Replace with new screen (aslo 3.5) works just fine.

I have attached two pictures. One showing the bad screen powered on. The second showing the new screen powered on.

Thanks
Attachments
2nd screen working.JPG
2nd screen working.JPG (34.33 KiB) Viewed 645 times
white screen.JPG
white screen.JPG (44.54 KiB) Viewed 645 times

User avatar
Franklin97355
 
Posts: 23911
Joined: Mon Apr 21, 2008 2:33 pm

Re: TFT Screen White only

Post by Franklin97355 »

Thanks for the pictures. Email [email protected] with a link to this thread and they will help you get a replacement screen.

Locked
Please be positive and constructive with your questions and comments.

Return to “Test Message Forum (closed)”