Re: A92: screen backlight

To: assembly-92@lists.ticalc.org
Subject: Re: A92: screen backlight
From: Betelg@aol.com
Date: Sun, 7 Nov 1999 20:32:46 EST
Reply-To: assembly-92@lists.ticalc.org


you can get indeglo strips for all sorts of different voltages... I have one 
here that expects 115, it all depends.  anyway, I've messed with the LCD's on 
gameboys and 83's, and I don't think it woule be that hard.. I'll test it on 
my old BW game boy, and I'll get back to you.


> Your idea would be nice to do.  I would like a backlight on my 92 as well.  
>  But I've looked inside at the LCD and it looks like it would be hard to do 
>  safely.  The LCD is held down by a double sided sticky foam pad that would 
>  make it very hard to romove.  There are 2 main dangers in trying this.  1- 
>  Cracking the LCD while trying to remove it, and 2- Damaging the fragile 
>  connector strips along the top, and side.  If even one connection were 
>  broken it would take out an entire row, or column of the LCD.  And I guess 
>  the third problem would be getting the "paper" backing off of the LCD and 
>  replacing it.  It seems to be glued to the back.  I suppose that other 
calcs 
> 
>  may be put together different than mine, so I won't say you can't try, but 
>  it looks pretty impossible to me.  Sorry.
>  
>  Kebes
>  
>  PS. The 92 runs on 6 volts which should be enough to run an indeglow strip 
>  (watches are only 1.5 - 3 volts).  In fact 6 may be too much, but you 
could 
>  easily put a resistor in series with it to make it work.  Good Luck.