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I have 2x 7inch touchscreens laying here. (Original raspberry touchscreens) I always had one connected to a raspberry. The other one was backup. After I connected the backup one to the raspberry, my SD card went corrupt.

Now I tried everything to get one of the two touchscreens working with a fresh install of raspbian. Both don't work. Tried updating raspbian etc. Nothing has worked. The DSI boards don't have a light so I can't see if they are broken.

The raspberry does not recognize them with:

dmesg | grep -i ft5406

So I think it might be the touchscreens that are broken.

Is there anyway to trouble shoot this?

Thankyou, Rick

  • I doubt 2 touchscreens would go caboom simultaneously. Most probably the DSI controller on the RPi broke down. Try connecting your screens to a different RPi if you have one. – Dmitry Grigoryev Feb 8 '17 at 9:21
  • Hey Dmitry, thank you for your response! Tried it with 3 different raspberry 3's. I did connect 5v and gnd turned on the wrong connections. But I thought they would have protection for that. – Rick Feb 8 '17 at 9:29
  • Measure voltage on your raspberry pins first. – jaromrax Feb 9 '17 at 15:27
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Check to make sure you plugged them into the right pins and that the connections are secure. If you didn't, there's a chance that you could have destroyed them.

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