PB100 Recap Job

[aplmak]

So I've been on a PB100 kick... Recapping a 100 right now.. still waiting on the new caps.. I've chosen Tantalums except 3 electrolytics.. I've done the display board as it needed 2... one Sony one had leaked.. the 15/16 cap.. Here it is almost completed.. And I found a company that still had PB100 memory in stock.. I bought the last 5 modules.. they are 4mb's.. but I plan to place the 658512LTT-8 chip's in the 4 blank areas to bump it to a whopping 6mb.. and with 2mb onboard I will have total of 8... I washed the board down with 91% alcohol and cleaned her up.. she wasn't in bad shape!!! They really made these laptops like they were disposable.. Very cheap.. Not Apple quality.. But I have to say for the time these came out they were SMALL and light!!! Ahead for their time.. Very competitive with the DOS crap machines...

Here's a pic.. I'll post a completed pic when I get the rest of the caps...

 

[james_w]

nice! I've had no luck locating PB100 memory myself

 

[Trash80toHP_Mini]

Everything on both sides of the divide seemed like crap in those days as compared to later machines. The only thing about the PB100 that wasn't up to the Apple 100 Series standard was the post they used instead of a third roller for the trackball. LOVE that smaller trackball to death! I transitioned into the Duo System afterward and the PowerBook 100 was the perfect break in tool for the Duos. Luckily I treated myself to APS' Modem, 230MB HDD and 8MB Memory upgrades almost immediately. MS Works for DOS under SoftPC was the cat's meow until the release of ClarisWorks 3.

 

[techknight]

You do realize, the PB100 is a macintosh portable with a completely redesigned power circuit, right? Oh and the display controller is different as well I believe. Everything else electronically is the same. They did remove the MISC GLU because the PB100 uses regular DRAM instead of SRAM/PSRAM, and they switched to 85C80 SCSI/SCC because of space reasons. 

But the core logic, main GLU, is identical. 

 

[aplmak]

Techknight... Thanks for the info.. I have a few 100 motherboards.. and like the pic I sent you later revisions have those strange after production modifications with extra resistors and such soldered on.. not the best work on them if you ask me.. kind of sloppy but I suppose it did the trick.. I just find the plastics and general overall production of the 100's to be very cheap.. But they did do a great job miniaturizing the "luggable" to this small little 100.