Page 1 of 1
screen stays white and doesn't turn on
Posted: Thu Oct 04, 2018 10:16 pm
by theabstractpyro
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!
Re: screen stays white and doesn't turn on
Posted: Fri Oct 05, 2018 3:29 am
by Helder
Check continuity on the LCD test points to the Pi GPIO, chances are one of the solder joints could be broken.
Re: screen stays white and doesn't turn on
Posted: Fri Oct 05, 2018 9:38 pm
by theabstractpyro
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?
Re: screen stays white and doesn't turn on
Posted: Fri Oct 05, 2018 9:39 pm
by theabstractpyro
sorry, I meant "continuity" not "connectivity"
Re: screen stays white and doesn't turn on
Posted: Sun Oct 07, 2018 7:49 am
by Helder
Reset is vital to get the LCD working, all pins need continuity to work not just some.
Re: screen stays white and doesn't turn on
Posted: Sun Oct 07, 2018 5:02 pm
by theabstractpyro
thanks so much! I got the screen working by soldering the reset pin on the pi directly to the reset pin on the board.