This is why I discourage self-installsWiltshire wrote:Okay! I made a break through! I got the bottom screen to work! However the top screen is random noise. I have a few screenshots below to the what I'm describing. There is another problem, you'll notice that the colour is yellow instead of white. Now if I press on the slot for the ribbon cable the colour somewhat clears up. This may be because of the cracked board slot.... that's what I'm afraid of.
Could be the connector, or bad soldering, or both. I can send you a replacement board+cable, or just fix the 3DS for you if you want to send it in.