TFT Display - 3.5" Diagonal - Blur and Vertical Lines Moderators: adafruit_support_bill, adafruit

[kb0mmr]

Front

Front.jpg (90.8 KiB) Viewed 121 times

Pi Zero hook

Pi Zero hook.jpg (146.05 KiB) Viewed 121 times

Bad display with Blur and vertical lines

Blur and vetical lines 1.jpg (201.27 KiB) Viewed 121 times

Hi,
I am requesting a replacement NTSC/PAL (Television) TFT Display - 3.5" Diagonal PID: 913. The one I received is broken with blurring and vertical lines on the display that was purchased on Order Number : 1942044-5181935542 on December 29, 2018 and received on Jan 3 2019. I am currently using a Raspberry Pi Zero /w with retropie-4.4-rpi1_zero.img installed. I also test a another NTSC/PAL (Television) TFT Display - 3.5" Diagonal PID: 913 that was purchased on the same order number and it work fine.

Thank-you

[adafruit_support_carter]

Are you testing the second display with the same Pi? And in general, everything else the same - just swapping displays?

[kb0mmr]

Yes, Everything is the same the display was the only thing swapped. Attached a picture of the good display

[adafruit_support_carter]

It looks like some sort of connection issue. Look for anything obvious. Crude, but maybe even try the wiggle test - wiggle the video signal wires and see if the display reacts at all. Also check the ribbon cable below. It looks OK in your photo, but sometimes they aren't well seated and/or the retaining clip isn't fully pushed in.

ribbon.jpg (24.01 KiB) Viewed 69 times

[kb0mmr]

I also thought it was a connection or grounding problem. I did perform the wiggle test on the video cable with no change. Also checked both side of the ribbon cable and verify that the ribbon cable was fully seat in and locked still no change. In my opinion the problem is located on the the display side of the ribbon cable not the CCA side.

[adafruit_support_carter]

Thanks for checking. One other quick check - what if you use the second input? Any difference?

[kb0mmr]

SIr,

Same result when using second input.

[adafruit_support_carter]

OK. Thanks for checking that. Let's replace it. Send an email to support@adafruit.com with a link to this thread and they can get you a new one.