twelvetone12
Well-known member
I've been lurking around here for a bit gathering info on how to repair a PuwerBook 100 with a blank screen, and I'm happy to report it was a success!
The powerbook 100 was my first laptop back in 98/99 when I was a kid. It was given to me for free by a dealer since the screen would intermittently shut down, the typical black screen of death on these machines. Nevertheless I dragged it around with me, and since it was missing the internal drive, I used a (huge) HD SC 20 that came with my Mac Plus, which weights a ton (yes I was young and dumb). I still have the drive, a project to fix it is for the future.
Eventually the screen died completely and since at the time I know nothing about electronics I sold off mine. But I really loved that machine!
So I decided it was time to get one and properly fix it, since now I actually understand what is going on in it. I got a very cheap and broken unit off ebay (gosh are these expensive!) to play with.
Well turns out a simple recap did the trick, I still need to properly verify the voltages in the buck converter for the screen, and I have to recap the screen still, but it powers up like a charm! I'm so happy.
...and sound does not work anymore (it did BONG when it had the black), that is for another debugging session.
Does anybody have the schematic for the screen? I found the schematics for the logic board but all the screen assembly is missing. Before just changing the caps there I would like to figure out exactly what they are for.
Now I need to get one of those rebuilt batteries...
The powerbook 100 was my first laptop back in 98/99 when I was a kid. It was given to me for free by a dealer since the screen would intermittently shut down, the typical black screen of death on these machines. Nevertheless I dragged it around with me, and since it was missing the internal drive, I used a (huge) HD SC 20 that came with my Mac Plus, which weights a ton (yes I was young and dumb). I still have the drive, a project to fix it is for the future.
Eventually the screen died completely and since at the time I know nothing about electronics I sold off mine. But I really loved that machine!
So I decided it was time to get one and properly fix it, since now I actually understand what is going on in it. I got a very cheap and broken unit off ebay (gosh are these expensive!) to play with.
Well turns out a simple recap did the trick, I still need to properly verify the voltages in the buck converter for the screen, and I have to recap the screen still, but it powers up like a charm! I'm so happy.
...and sound does not work anymore (it did BONG when it had the black), that is for another debugging session.
Does anybody have the schematic for the screen? I found the schematics for the logic board but all the screen assembly is missing. Before just changing the caps there I would like to figure out exactly what they are for.
Now I need to get one of those rebuilt batteries...