Toughbook CF-30 Emissive Keyboard LED Mod

With reference to thread 'CF-30 emissive keyboard ... on the dim side' here: http://ift.tt/2adghQr

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 levels of backlight are controlled on the motherboard and manifest as differing voltage levels on the backlight cable, or whether this is controlled with the built in keyboard controller?

I can test this if no-one else has. I fancy seeing if I can double the current backlit level, which will still give me a useful range. I note that the keyboard appears to be factory sealed, so even though the previous post displays an representative image of the backlight LCD flexible PCB that realistically there is no way to gain access to that to in order to modify it in any way, at least not without some considerable 'hacking' and removing any water resistance inherent in the design.

Regards, Mark.

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Toughbook CF-30 Emissive Keyboard LED Mod