Skip to content

Sega Nomad LCD Mod Brightness Control

September 29, 2013

If you have not done the LCD mod yet, read this first. In this post I will be going over how to get limited use of the brightness control for the LCD mod.

The brightness control on the Nomad is a potentiometer that has a range of close to 0 ohms to 47k ohms.  To get limited use of it you can connect the composite video wire to it and add a resistor in parallel. When the resistance in the potentiometer is less than the resistance you put in parallel then the video will go through the potentiometer (brighter). Otherwise it will go through the resistor you added (darkest). Since the potentiometer has such a huge range, it acts more like a switch when doing this mod.

I tried  a few resistors to figure out what works best for me and it seems like 100 ohms is the way to go. You can go to around 200 ohms but it is way too dark in my opinion.

Sega Nomad LCD Mod Brightness Control

In my photos I have the resistor far away from the brightness control pot because it was easier for me to try different resistors that way. You really want the resistor to be as close to the pot as possible. You might want to consider using shielded cable for this mod as well.

WP_20130914_010

WP_20130914_014

WP_20130914_016

That’s it! Remember you will not have much brightness control. Less than 1% of the pot will be used. The range from 100 ohms to 47k ohms will not matter. That is why I said it acts more like a switch. It will either be bright or dim.

From → Mods, Nomad, Sega

Leave a Comment

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: