Possibly Defective LCD

[StankyShanky]

I recently purchased an LCD from Adafruit and believe it is defective.

It is a 2" TFT lcd. It has vertical light streaks/stripes across the
screen. Based off the pictures on the listing (product 911), and photos I
have seen of projects using this screen this is not normal. I believe it is a
problem with the LED diffusers in the backlight of the display, but have not
dismantled the display to confirm.

Here is a gallery of photos of my screen and its light stripes.





Troubleshooting steps I have checked:
-The ribbon cable is not torn, and is properly inserted straight.
-The screen and drive board is not physicaly damaged.
-The power supply is 5v through an isolated, variable linear benchtop power
supply.
-Stripes are consistent despite whats on screen, even with no signal.
-I have slightly peeled back screen protector to ensure its not a pattern on
the screen protector.

[StankyShanky]

It has been nearly a week and I have received no response, while several more recent posts have been addressed. I have tried emailing support and have been told the forums are the only way to get support. My screen is a lemon, and I would like to know if I am going to be able to swap it for a replacement unit, or if I am going to have to issue a chargeback and buy a new display from AliExpress. I really, really do not want to do that, but my project has an approaching deadline and a limited budget. I want to find a way to resolve this without forcing an outside party to get involved.

[Franklin97355]

Sorry for the delay. What are you using for power and what are you driving the display with?

[StankyShanky]

Sorry for the delay. What are you using for power and what are you driving the display with?

-The power supply is 5v through an isolated, variable linear benchtop power
supply.
-Stripes are consistent despite whats on screen, even with no signal.

Its driven from a Wii. I have tested the signal on a screen and the signal is clean. The issue is coming from the backlight, not the signal.

[Franklin97355]

OK. Please contact [email protected] with a link to this topic and they will help you

[StankyShanky]

Just following up. I received the new display and initial impressions are good. The light bars present on the old display are not present on the new one. Will make another post if I find an issue, but that isn't likely. Im dissapointed with the amount of effort it took to reach a conclusion, but Im satisfied with how it all worked out.

[StankyShanky]

Following up, a second time, we have another problem. The newer screen does not have the backlight issue that the old one did, but the picture is super flickery/jittery, which the first screen with the bad backlight diffuser was not. I can provide a video if necessary. Ive tried using the same drive board with both screens, and each screen has a different problem. I can, however, confirm that both of the driver boards are fully functional.