screen stays white and doesn't turn on

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theabstractpyro
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screen stays white and doesn't turn on

Post by theabstractpyro » Thu Oct 04, 2018 10:16 pm

when I turn on the raspberry pi the screen stays white. I can hear the sounds from the logos, but the screen stays white. this just started after I swapped out the sound card and got the sound working, and I don't know what to do. please help!

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Helder
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Re: screen stays white and doesn't turn on

Post by Helder » Fri Oct 05, 2018 3:29 am

Check continuity on the LCD test points to the Pi GPIO, chances are one of the solder joints could be broken.
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Re: screen stays white and doesn't turn on

Post by theabstractpyro » Fri Oct 05, 2018 9:38 pm

this is what I got from the test of connectivity from the screen to the pi-

vcc is connected to 3.3v on the pi
gnd is good
cs is good
rst is connecting to the rst on the board that I soldered to the pi, but not the pi itself.
d/c is good
sdi wasn't working but I added solder and now it's working fine
scl is connecting to sck on the pi, but not scl
led is fine
sdo (or soo, couldn't tell) is fine

should I solder a direct wire from rst on the board and rst on the pi?

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Re: screen stays white and doesn't turn on

Post by theabstractpyro » Fri Oct 05, 2018 9:39 pm

sorry, I meant "continuity" not "connectivity"

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Re: screen stays white and doesn't turn on

Post by Helder » Sun Oct 07, 2018 7:49 am

Reset is vital to get the LCD working, all pins need continuity to work not just some.
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Re: screen stays white and doesn't turn on

Post by theabstractpyro » Sun Oct 07, 2018 5:02 pm

thanks so much! I got the screen working by soldering the reset pin on the pi directly to the reset pin on the board.

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