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Hardware > Screw under GBASP battery.

#161292 - Untamed - Thu Jul 31, 2008 11:15 pm

I'm wondering what the little screw, that looks like an optical drive's pot tweak screw, under the battery does?

I honestly just spent a half hour trying to find an answer, and the fact that I can't find anything on it makes me a little worried to just start recklessly turning it.

Information is appreciated!

Thanks

#161346 - tepples - Fri Aug 01, 2008 9:12 pm

It might have something to do with balancing the voltages on the LCD panel, just as the "magic brightness control" screw on the GBA did.
_________________
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#161371 - Untamed - Sat Aug 02, 2008 5:46 am

tepples wrote:
It might have something to do with balancing the voltages on the LCD panel, just as the "magic brightness control" screw on the GBA did.


Thanks. :)

#161602 - GrizzlyAdams - Thu Aug 07, 2008 1:00 am

in other words it probably adjusts the voltages going to the lcd, and playing with it is likely to kill the lcd.

#164323 - Pukys - Tue Oct 28, 2008 5:45 pm

GrizzlyAdams wrote:
in other words it probably adjusts the voltages going to the lcd, and playing with it is likely to kill the lcd.


I don't think, it'll kill the LCD. Most likely, it is to fine-tune Vcom, that is used for compensation on the LCD. If it is incorrectly set, there will become a line-structure visible on the display, alongside with a significant loss of contrast (till the screen turns blank). But, this is normally no way to kill a display, because the loss of display quality is usually reversible (just fine-tune, till the quality looks good).
Alas, if the adjustment is meant for the backlight of the display, it actually could kill the whole thing, but this is not very likely: CCFL inverters on this scale usually don't need external regulation.

#164402 - vashurin - Thu Oct 30, 2008 3:47 pm

I screw it:)
It's control of brightness in small diapazon.
My Nintendo SP is still working.