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I killed it I think...

Posted: Tue Sep 18, 2018 6:11 pm
by greenshardware
:cry:

So I just got my Pi up and running yesterday with a cute little 3.5" touch LCD powered by GPIO.

I have a ribbon cable I wanted to use to extend the GPIO, but I couldn't get it to work. The screen stayed totally off.

I figured maybe i had it plugged in wrong?
The way the ribbon cable connects isn't exactly intuitive. So I spun the LCD around and it turned white! Sweet. A white screen is what I get if I plug the LCD in while the Pi is running. Restarting it fixes it.

Except this time restarting it didn't fix it. It stays white... With or without the ribbon cable. :( and nothing to HDMI.

So I notice that the Green ACT is not illuminating. I take the SD out and plug it in PC, says it is corrupted. So I reformat, image NOOBS and try again.

Nothing. I am doing the exact same thing I was before to image noobs onto the SD and it says successful.

Nothing I do will get the ACT to light up. Just solid red.

Could I have killed it messing with the GPIO and the LCD? Really bummed as this is my stuck in the hurricane project and can't really get another any time soon.

Re: I killed it I think...

Posted: Wed Sep 19, 2018 11:49 am
by hippy
If you have a multi-meter you can check for presence of the 3V3 supply on the GPIO connector. If that's not present your Pi's destiny could be playing central role in a wake.

Which Pi model do you have ? If it's a Pi 3B+ and there's no 3V3 then you have probably damaged the Power Management IC and that's not easy to repair.

Re: I killed it I think...

Posted: Wed Sep 19, 2018 12:34 pm
by LTolledo
Congratulations! Welcome to the club of those who have had their RPi's PMIC "killed in action".

Maybe we'll be more careful next time....