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Showing results for tags '520c'.
Ran into an issue where my power adapter for my Powerbook 540c was outputting 16v on one pin, but only 2.xv on the other pin so my 540c would no longer start up. Took the PA apart(it's epoxied together) and discovered 6 capacitors. 2x 330uf - 25v, 2x 100uf 200v, and 2x 100uf 25v. The part numbers can bee seen in the picture. While the capacitors didn't look bad, I knew they were 20 some years old and it was time to swap em out. Sure enough, as soon as I soldered in the new caps I got 16v back on both pins and my Powerbook 540c is happy again!
Hopefully, this would come in handy for anyone curious about the PCMCIA module made for the PowerBook 500 series. I've posted as many pictures from various angles of the board assembly and parts (in case anyone has interest in planning modifications and how much space is inside the module) as I don't intend to open this up very often. If at all. There are three hex screws, one plastic tab, and a sticker holding my Rev C module together. I didn't have a hex bit of the correct size, but a Torx T6 proved a snug fit that allowed me to remove the screws. When I depressed the plastic ta
So while I'm waiting for new caps to come in for the Fat Mac with the Hyperdrive I thought I'd dust this off and see if it worked. PowerBook 520c "BlackBird" I picked this up years and years ago and literally never did a thing with it. It's just been in a box in the garage for about 12 years. Anyway, when I powered it up and it gave me the Sad Mac. I figured out it was a hard drive error so I hunted up a Disk Tools floppy that would boot the machine and re-initialized the disk. Success! No more Sad Mac! After more digging I found a set of System 7.5 floppies and loaded
I have a PowerBook 520c and there was a bit of a problem with the display where if you poke the display in the right place, the contrast will bug out. Sometimes if you hit in the same spot again, the display will become readable, but unstable. Basically, it goes from unreadable bright, to unreadable dark, to unstable dark, and then basically flicker. I have saved a 520c from the depths of a neighbor's garage! Are you happy now?