Different Screen control board

[dandy]

Hey Guys, First post here. I just started with getting my screen ready. And I seem to have a different board to the ones listed on the wiki.
I have tried to power the screen with 5v but I don't get a backlight, just some vertical lines throughout the screen, kinda hard to take a photo of it. My guess is I have to solder a wire or remove an IC, just don't know what or where. Can anyone have a look and see what I need to to get this to work with 5v? thanks. photos attached.

[Boydee]

If you Google some of the numbers on the chips, I think one will be a voltage regulator chip or IC? And hopefully a schematic will point you in the right direction. I tried searching a few but I'm on my phone and also I couldn't read some off the numbers.

Hope this helps

EDIT- I did a real quick Google and I THINK the far right chip with JW marking is the regulator if you Google that part number as I can't see if from the pic you may get an answer or post the part number and someone with more experience then me could help

[dandy]

After lots and lots of searching. I have found another thread with a possible solution. http://www.sudomod.com/forum/viewtopic.php?f=8&t=3053

They have v5 of this board and I have a newer v6. The o my major difference is that JW IC is rotated 180 degrees. I've tried googling information or schematics for this chip but can't find it. If I can see what pin is what I might be able to make an educated guess. The code is JW5022S

Cheers.

[Boydee]

http://www.datasheetspdf.com/datasheet/JW5022.html

And

http://www.sudomod.com/forum/viewtopic. ... &start=300

They mention measuring the voltage on each leg of the IC and one will have 5v and that's the leg you either solder a jumper wire to or if that doesn't work try removing the chip then soldering it to the pad. But hey don't hold me accountable if you ruin your board. Do it at your own risk.

[dandy]

Thanks for that. I don't have a multimeter. In hindsight I should have soldered a jumper first. I have removed the chip now. And soldered 5v to where the output pin of the IC should be. Now I'm getting a solid black Color on the screen. But I'm not getting any signal showing on the screen. I have the composite lead in the right spots I believe. Tried both composite through holes on the rPi 0