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HDMI 4 PI No Touch Screen Not Responding
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Please be positive and constructive with your questions and comments.

HDMI 4 PI No Touch Screen Not Responding

by mcilwain on Wed Jul 22, 2020 8:35 am

Hi I purchased the last two HDMI 4 PI No Touchscreen's a couple weeks ago and one of them isn't responding. I plugged in the power adapter that I purchased with it, a green light appeared, I pressed the power button, light was still green but no response on screen. Pressing the source button would make the screen flicker but remain dark. I attached a laptop by VGA and by HDMI, pressed the source button a few times, but still no response. The second HDMI 4 PI works fine after following all of the same steps.

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Re: HDMI 4 PI No Touch Screen Not Responding

by adafruit_support_carter on Wed Jul 22, 2020 12:24 pm

Please post a photo of your setup showing how everything is connected.

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Re: HDMI 4 PI No Touch Screen Not Responding

by mcilwain on Thu Aug 06, 2020 10:57 am

Hi sorry for the late response. The display is connect via HDMI to a MINIX Neo z-834. I finally got a response from the display but still no picture.
Attachments
Faulty Display 3.jpg
Faulty Display 3.jpg (119.16 KiB) Viewed 29 times
Faulty Display 2.jpg
Faulty Display 2.jpg (157.25 KiB) Viewed 29 times
Faulty Display 1.jpg
Faulty Display 1.jpg (143.2 KiB) Viewed 29 times

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Re: HDMI 4 PI No Touch Screen Not Responding

by adafruit_support_carter on Thu Aug 06, 2020 11:21 am

The on screen display is working, so seems like the hardware is at least functional. It may have something to do with the HDMI source.

You mention having two displays. Does the second display work OK with that same video source? The MINIX Neo z-834?

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Re: HDMI 4 PI No Touch Screen Not Responding

by mcilwain on Thu Aug 06, 2020 11:38 am

Yes the second display is working fine. I used the same HDMI cable, power adapter, and HDMI port on the MINIX as the faulty display.
Attachments
Working Display.jpg
Working Display.jpg (71.05 KiB) Viewed 28 times

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Re: HDMI 4 PI No Touch Screen Not Responding

by adafruit_support_carter on Fri Aug 07, 2020 11:21 am

Thanks. This is a weird issue. We'd be interested in getting that hardware back to take a look. Are you in the US?

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Re: HDMI 4 PI No Touch Screen Not Responding

by mcilwain on Tue Aug 11, 2020 7:05 pm

Yes, in Michigan.

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Re: HDMI 4 PI No Touch Screen Not Responding

by adafruit_support_carter on Wed Aug 12, 2020 2:40 pm

OK, thanks. Let's replace that one and get it sent back as well.

Send an email to support@adafruit.com with a link to this thread and your order number. They can send you a replacement board. Also, ask for an RMA FORPHIL to have the problematic one sent back.

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Please be positive and constructive with your questions and comments.