Very strange computer this one, apart of rare... I have played a little with the nice PALE emulator, but all I realized is that this thing is slooooowwww...
The classic "how to get the most of your...." perfectly applies here, the Lynx is slow as is; but with the right programming it could feel a lot faster. Check games like JSW, it has a lot of moving sprites using the three color planes and despite this, it's perfectly playable or the same Scorpion ROM, makes the Lynx interface a lot more friendly.
This subject deserves a new thread, someday...

Having said that, you must to build or get a PSU for your Lynx!. With a picoPSU is really easy to build a powerful replacement.