This is a quick and relatively simple modification done to a GameBoy light system called LightBoy. The original design operates on two AA batteries and uses two incandescent light bulbs that provide very little light, not to mention drain the batteries. However the accessory itself has a very nice sturdy case and replacing the bulbs with LEDs is an easy way of solving the problem. Two cheap and ultra bright 14,000 mcd White LEDs available from Dealextreme.com ought to do the trick.

The first step is to disassemble the top lens case and remove the two light bulb inserts. Very carefully and slowly drill a hole in the bottom part of the bulb case little bigger than the LED diameter. Try to make it as close to the top and away from the Copper contacts as possible, that will help to protect the LEDs with the case is closed.

Make sure to observe the polarity of the LEDs, test before starting to bend and cut the legs. Also try to make the bend angle slightly inward to center the light towards the screen.

Note the extra solder joints where the copper case contacts insert into the case. The socket connections get oxidized and hinder the current, also causing flickering and dimmed operation. It is a lot easier to sand them and carefully solder both together. After all the LED’s lifespan will not require replacement any time soon.

The result is pretty damn good, very bright and certainly a huge improvement for 20 cents worth of parts. Only use ultra bright LEDs, regular ones will not work. The modification looks very stock and the only improvement would be to point the LEDs slightly more inward or possibly even defuse them with some sand paper to have more of a soft ambient glow. Enjoy.