2.8'' TFT Capacitive Touchscreen doesn't work any more

Moderators: adafruit_support_bill, adafruit

Forum rules
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/
Locked
User avatar
DSHermann
 
Posts: 2
Joined: Tue Mar 24, 2015 5:15 pm

2.8'' TFT Capacitive Touchscreen doesn't work any more

Post by DSHermann »

Hey,

I bought the 2.8'' Capacitive Touchscreen last week. First it didn't work with the old image (white screen).
With the new image it worked fine, but after a view days the touchscreen didn't work any more while the screen still works normaly.
I tried the reinstallation but still it doesn't work.

When I shut down the Pi the display still shows the desktop some times.
Can unplugging harm the touchscreen?

Best regards
Hermann

User avatar
adafruit_support_mike
 
Posts: 67454
Joined: Thu Feb 11, 2010 2:51 pm

Re: 2.8'' TFT Capacitive Touchscreen doesn't work any more

Post by adafruit_support_mike »

If you plug it in or disconnect a PiTFT while the RasPi has power, any number of things can happen to it. Damage isn't guaranteed, but we can't rule it out either.

Let's check things that can be fixed first though: post a photo of the underside of the PCB showing the flex cable in its connector.

User avatar
DSHermann
 
Posts: 2
Joined: Tue Mar 24, 2015 5:15 pm

Re: 2.8'' TFT Capacitive Touchscreen doesn't work any more

Post by DSHermann »

Here is a Photo of the underside of the PiTFT.
Image
https://www.dropbox.com/s/8zvtefvlhtl9l ... 7.JPG?dl=0
I can't see any damaged components.

User avatar
adafruit_support_mike
 
Posts: 67454
Joined: Thu Feb 11, 2010 2:51 pm

Re: 2.8'' TFT Capacitive Touchscreen doesn't work any more

Post by adafruit_support_mike »

Actually I was making sure the flex cable was seated properly. A lot of PiTFT problems lead back to the cable connection.

It looks like yours is seated properly though, so I doubt that's the problem.

This is one of those grey-area cases where we probably won't be able to isolate a specific cause of failure, and there are clues pointing to early component failure and to operating conditions.

I can authorize a one-time replacement on the chance that it was the hardware's fault, but support for the replacement will be limited. If the new one fails in the same way, we'll assume the hardware was good.

Send a note to [email protected] with a link to this thread and the folks there will get you a new PiTFT.

Locked
Forum rules
Talk about Adafruit Raspberry Pi® accessories! Please do not ask for Linux support, this is for Adafruit products only! For Raspberry Pi help please visit: http://www.raspberrypi.org/phpBB3/

Return to “Adafruit Raspberry Pi® accessories”