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View Full Version : Keypad-backlight of Nokia 2100 - too strong



captainamerica
23-08-2004, 11:50 AM
I also wonder if it's possible to switch off the backlight, or even better, to reduce the intensity of the light: it's blinding at night and it consumes energy. Until now I did not find a solution, it's not in the menu and it cannot be programmed (as far as I know). If you're really technical you can remove or replace the led's, or you can replace a resistor for a stronger one - thereby reducing the currect (and the light). Technical details (German website):

http://www.blue-backlight.de/de/umbau_de/umb_2100.htm

I guess these actions can be pretty dangerous for your phone if you're not experienced. I wonder if you found a solution? Can anyone give me some advice on this?

NokDoc
23-08-2004, 04:29 PM
Hi,

At the regular dct3 ram areas is a word value stored for the lcd state on/ off.

From my head it's on 0002.0033 in most dct3's.

That address is called by the functions to read the state of the lcd.

And is also called one time to store the new state.

When U reroute this one save call to a 'dummy' (spare or unused) location, the phone will always think it's off, while this value at 0002.0033 never changes.

When U extend this idea, U could also make a button in menu to swap that address dynamically.

Ps, if the above or winarm stuff is new to U, better forget I mentioned this. ;)

NokDoc