Original board - this combines the power supply, backlight inverter, and speaker amp. I need to run it off low voltage DC, not AC.
The underside.
Once I drew out a schematic I figured out where I can seperate the board, it's somewhat modular.
Basically, 120vac comes in, goes through "oh crap" capacitors (for lightning etc), then goes through a stepdown transformer with two legs. One is 25vac, runs through a half-wave rectifier (basically chops the sine wave in half) then through an inductor and a few filter caps to get a rough but usable 12vdc. This runs the inverter.
The other leg of the stepdown transformer is about 11vac, they are even cheaper and just run it through several diodes in parallel and a handful of inductors/caps. 5vdc runs the LVDS panel controller.
I found all this out by poking around with my meter while the board was plugged in and running. This is very dangerous, I'm not responsible if you get yourself killed while mucking around with house-voltage AC. You need to be very careful and diligent.
The AC part is cut out completely. Left is the audio amp, on the right is the inverter (most of the fun is on the other side)
LVDS vga controller board. Wired the inverter and audio amp back together. Hand is for scale, the controller board is incredibly small.
I'm hardcore. Bought all these once I found it would work
