Display has just black screen

[yves1984]

My Screen has only black screen.
I got my screen from alibaba https://xjlcm.en.alibaba.com/product/20 ... 6.8.Sj8qiw

what im done:
install the retropie for Zero. test it with the HDMI port on my TV and it works.
on the config.txt i change some parts:
old
#framebuffer_width=1280
#framebuffer_height=720
new
framebuffer_width=320
framebuffer_height=240

must i do something more?

[Helder]

You might have to mod it for 5v, that board looks similar to the others on the forum that people have modded.

[yves1984]

have see that popcorn have the same display but the board is a bit differnt.
perhabs has he a idea or someone other ?

[yves1984]

How do I find out how I wired my display board must ensure that it runs with 5V?
Is there for this a trick or maybe someone has already a solution for me;)?

[Synnth3t1k]

How do I find out how I wired my display board must ensure that it runs with 5V?
Is there for this a trick or maybe someone has already a solution for me;)?

I think the quickest solution you're going to get, is to read/skim through this thread:

http://www.sudomod.com/forum/viewtopic.php?f=8&t=15

See if someone else is using the same display and control board. If not, take close up pictures, and I'm sure someone can help you with telling you if you need to and which IC to remove. Also, look through your manuals to see if your control board is a VV board. Could be as simple as adding a jumper wire.

[MiL0]

I have the same problem with 2 different screens... tried everything. They can't both be broken?!

[sander]

I agree: I think it was designed to run on 12V so you would have to modify it to run on 5V.

[yves1984]

how can i find out the way to modify this board?
Because nobody have this board

[Fleder]

how can i find out the way to modify this board?
Because nobody have this board

Usually it is one of those 8 legged ICs that you see on your board.
Fortunately, yours are named.
Try to search for those names in google and try to fine the one that modifies voltage.
You need a multimeter to measure which IC does output 5v and then wire the VIN to this leg.
But this is just the really rough way to do it. It always needs measuring to make sure you do not fry your board!

[yves1984]

how can i find out the way to modify this board?
Because nobody have this board

Usually it is one of those 8 legged ICs that you see on your board.
Fortunately, yours are named.
Try to search for those names in google and try to fine the one that modifies voltage.
You need a multimeter to measure which IC does output 5v and then wire the VIN to this leg.
But this is just the really rough way to do it. It always needs measuring to make sure you do not fry your board!

i already search on google if someone other has this done, but don't find something.
so propertly will test witch IC-Legs brings me 5V and make a wiring from there to the VIN.

But what will be the VIN ?