I recently acquired a second Powerbook 3400c. It was sold as untested, and I primarily wanted to rob the LCD for my other 3400c, which works but has substantial pressure defects. I feel like this one is close to working and I don't want to write it off yet. Just for back ground, I've been working with two separate power adapters-both an "brick" and a later "hockey puck" that are known good and have powered many other computers as well as an external charging cradle. I have two good factory batteries labeled for the 3400 and a third labeled for a G3. All of these batteries will run either my working 3400 or Kanga for 2 hours or more and will keep the computer asleep for over a week, so I know they are good. The newest one has a 32mb memory upgrade card, but as best as I can tell is otherwise stock. When I first apply power(whether battery, power cord, or a combination) and then hit the power button, the green LED on top will illuminate and stay lit indefinitely. The service manual advises pressing and holding the reset button for 10-20 seconds and repeating. Usually doing this will cause the light to go out the computer to make a noise that sounds like a fan running. Pressing the power button has no effect, and holding the reset button seems to only toggle between this mode and LED on mode. I know these have a rechargeable NiMH PRAM battery, and I've tried leaving the computer plugged in with a charged battery for a couple of hours to hopefully charge this up(the service manual also suggests this). I'm wondering about disconnecting the PRAM battery completely. I know this is almost always a "fix" for a non booting Wallstreet-Pismo along with the early TiBooks. Any thoughts on anything else to try?