Toughbook CF-30 Emissive Keyboard LED Mod

With reference to thread 'CF-30 emissive keyboard ... on the dim side' here: http://forum.notebookreview.com/threads/cf-30-emissive-keyboard-on-the-dim-side.762073/

I now have a spare Chicklet Emissive / Backlit LED keyboard to play with. I wondered if the DC-DC converter modification had actually been attempted by anyone?

I believe the standard voltage output is 5V, and was wondering what I could safely increase that too?

I'm unsure as to whether the four...

Toughbook CF-30 Emissive Keyboard LED Mod