Lik-Sang gives you a 2 month warrenty ON TOP OF your manufacturers warrenty. If it breaks within 2 months you send it back to Lik-Sang, if it breaks after that, you have to contact the manufacturer to get your manufacturers warrenty. This is what almost every store, both online and not, in the entire civilized world does.
So do NOT open your GP32. Call GamePark and talk with them.
The FLU isnt that advanced of a unit. It consists of a switch, a hot and ground wire, a light, and a custom plastic reflector screen. Now the screen is nearly impossible to find a replacement or find something else to use as a replacement. The rest, (the switch, the wires, and the light) are very easy to replace, and you can find replacements at any electronics shop (RadioShack etc...).
You can probably take it into any electronics repair shop and have them check it out.