I recently got a hold of two Wonderswans and decided I wanted to front light at least one of them. After some research I found this screen. The screen seems to be the proper dimension for front lighting the wonderswan, and it was on sale for $3! So I grabbed four of them (in retrospect I should have gotten like 20 of them).
They came yesterday and I tore the thing apart and started off on frontlighting it. This will serve as somewhat of a guide for doing this.
First we start with the donor screen.
Next it was figuring out the pinout to power the led bar for the front light. That basically just took two tries, I had a 50/50 shot anyway. If the picture isn’t clear, the outer two connections are positive and the inner two are the ground. I honestly thought it would be the other way around.
Simple enough, now to taking apart the Wonderswan. There are just six screws on the back (Torx 7, I think). Just remove them and lift the back off. I didn’t take any pictures of this part. It’s very straightforward. Just remove the back, then remove the screen ribbon cable and lift the motherboard away. Then slowly pry the screen out with a flathead screwdriver or something similar.
With the screen out, I initially laid the front light in with the light bar towards the top of the screen. DO NOT DO THIS. When I closed everything up…this happened
I killed the screen. One of the sectors(?) broke so the top third of the screen no longer works. So I had to get a screen from my second Wonderswan. Putting the bar at the top could work if you don’t want to do any cutting, and if you leave the screws a little loose, but I’d be worried about any extra pressure cracking the screen.
Seeing as the light bar puts too much pressure on the top of the screen, I decided to go a different route. I decided to put it in with the bar on the bottom, and dremel out room for the bar to be completely out of the way of the screen
This worked fairly well, and I glued the light bar into place, and started putting everything back together.
.Now the next step is hooking it all up.
VCC (3.3v) is pin 23 and 24 on the cart connector
GND is pin 1 and pin 48
Close it all up and play in the dark!