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Subject: Re: white backlight mod
From: Brian Wolven (brian.wolven_at_verizon.net)
Date: 2004-06-03


[IDC]Dragon wrote:

> At first I thought I'm way too old to spend an hour of micro-surgery work on
> such a childish mod, but I'm quite pleased with the result:
> http://joerg.hohensohn.bei.t-online.de/archos/backlight.jpg
>
> On this picture, it looks very blue, but is in fact white with a touch of
> blue. Readability is much better (mostly due to way more brightness), movies
> and JPEGs look a lot better in b&w than green.
>
> I used SMT LEDs in 0603 package, sold for Nokia phones, but can't recommend
> those. This is a bit smaller than the footprint, my LEDs were extremely
> sensitive to soldering heat because they had no backplate. Melts a second
> after being touched by the soldering needle. Better use the larger 1206
> type, they should fit. In general, the chip LEDs have to be soldered in
> sideways.
> Because of the higher forward voltage (~3V instead of ~1.8V), I connected
> two in parallel instead of in series like originally. This means you have to
> cut the interconnecting trace and route 2 wires per side. The current
> limiting resistor is already OK for this configuration, no need to change
> it.
>
> And no, I'm not starting a business and do that for anybody else. ;-)

So you're just tormenting those of us who lack the requisite skills? =P

Nice job, anyway!

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