I have an old car DVD player sitting around that has a fairly decent secondary TFT LCD screen (hannstar 721h440b19-a1) that I thought I could use with my Raspberry Pi 3 Model B.

I opened up the unit, and the issue I'm running into is that the control board receives the video, power and audio signal all through a single USB connection. I was curious if there was a simple way to get the display to work with my raspberry pi with the least amount of hacking to the control board. Is there a way to pass video through USB on the Pi? Or could I desolder the USB connection and run wiring for power, video, and audio separately?

hannstar 721h440b19-a1 TFT LCD Display Control board details

  • If not impossible, making a random LCD screen from a random device work with a raspberry pi would probably need so much hacking and work that buying a new LCD would be a far better and easier option. Mar 12, 2019 at 1:23
  • looks like some french guy was looking at the same thing raspberrypi.org/forums/viewtopic.php?t=142551 run that through google translate, see if it helps you at all Mar 12, 2019 at 1:27
  • Just ran the above link through Google translate, and the result of the discussion was that it would be much cheaper and less time-intensive to buy a new display.
    – Joe Skeen
    Jun 25, 2020 at 0:21


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.