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Fizzbinn

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  1. For those wanting to try something short of surface mount desoldering. I've had very good luck repeatedly spraying with flux remover (its stronger than plain IPA for dissolving gunk) and using a dental brush to clean the gunk out from under these chips. Got a Color Classic motherboard working this way (also did its sound chip like this). 4140A Flux Remover for PC Boards https://www.amazon.com/gp/product/B07XDCRLR6/ DenTek Slim Brush Interdental Cleaners https://www.amazon.com/gp/product/B009MHV3VW These brushes can actually fit between the chip and its legs from either side. I kept working it and spraying more cleaner until the run off became clear, had the board propped up on one end with a bunch of paper towels on the other to soak up the run off (fun colors from the cap goo).
  2. Fizzbinn

    PB 1[4-8][0,5]c? Li-ion Battery

    Very impressive! Definitely interested in your BOM as well as thoughts from others on possible 3D printed cases. It would be very cool if there were a guide, instructions, a kit or a product for those of us that wanted a moDern solution to running these PowerBooks off battery.
  3. Fizzbinn

    IIsi CAP kit ordered...

    The linked mouser project looks good to me too.
  4. Fizzbinn

    IIsi CAP kit ordered...

    Your welcome! Your ask for a double check was a good idea cause I made a mistake on one of the tantalums... IIsi Power Supply (Sony) - Daughter Card: Qty x Cap µf x Cap V - Cap Type :: Mouser part # - Case Size Code 1 x 3.3µF x 35V - SMT :: Mouser 581-TAJB335K035SNJ - Size B 1 x 100µf x 6.3V - SMT :: Mouser 581-TAJC107K006R - Size C 1 x 33µf x 25V - SMT :: Mouser 581-TAJC336K025RNJ - Size C <-- the correct one I copied the wrong line when I was making that list, the 3.3µF x 35V part is one I ordered to recap my PowerBook 100 LCD... FYI Since I originally posted this I've successfully recapped two more IIsi Sony power supplies with these parts.
  5. Fizzbinn

    Clean 32bit ROM for Classic II

    Ah, looking closer I think I see it in towards the bottom right of your second to last photo, neat! Perhaps I’m incorrect but again I don’t think the Classic II has dirty ROM that needs to be fixed. The ROM upgrade slot is likely for “future” upgrades, I don’t believe Apple ever released any. I’m not sure if there are any Classic II compatible ”ROMinator” type hobbyist ROM upgrades available that might add a ROM based System image for instance.
  6. Fizzbinn

    Clean 32bit ROM for Classic II

    Looks great! Fairly certain the Classic II shipped with 32-bit clean ROM and you can address its max of 10MB RAM (with two 4MB SIMMs installed) in either 24 or 32 bit addressing mode. Do you already have a FPU expansion card? I’ve never seen one I don’t think.
  7. Which specific adapters are you using? If they have jumpers for primary/secondary/cable select do you have it set to primary/master?
  8. Got my PB 100 battery from @360alaska this weekend and after replacing a failed fuse he helped me identify (that I didn’t realize was bad) I’m wire free on a 30 year old laptop! So cool!
  9. Fizzbinn

    Using SCSI2SD v5.5 in a Powerbook

    With this adapter I’m not sure there would be a need for the special PowerBook version of the SCSI2SD. Are there any height considerations for later SSCI PowerBooks? 500 series?
  10. Thanks for the feedback. I decided I might be overthinking this and picked up a cheap Apple OEM labeled PATA drive on eBay. $9 BIN shipped for a tested working “UJ-857-C GENUINE APPLE DVD DRIVE IDE“. What could go wrong? ...so that’s apparently a 9.5mm height drive and I need a 12.7mm one for a G4 Mac mini. Tried to make it fit but the mounting screw holes don’t line up at all. The original flaky drive is a UJ-845. Found this ifixit guide: https://www.ifixit.com/Guide/Mac+mini+(PowerPC)+Optical+Drive+Replacement/265 which notes UJ-875 as a replacement part. And this which says the UJ-875 is the Panasonic replacement for the UJ-845: https://www.thebookyard.com/product.php?cPath=91_30_24_180&amp;products_id=5388 Looks like an Apple labeled UJ-875 can be found for around $10 on eBay as well. Think that’s my next step...
  11. https://www.ebay.com/itm/313208553687 I think I get to be your first eBay buyer! Looking forward to having a PowerBook I can run off battery! (Let alone my PB100 that I’ve spent a lot of time restoring)
  12. Fizzbinn

    New Internal HDD in Color Classic

    Yeah, definitely a good question. The CC seems to be a partial step to the 5xx full edge connector approach. I happen to have a parts CC dissembled and not packed away so It wasn’t too hard to grab some pictures that I thought might be interesting.
  13. Fizzbinn

    New Internal HDD in Color Classic

    A pass through terminator could be used in a CC, it’s a normal connector at the drive end of the internal SCSI cable: The other end of the internal SCSI ribbon cable is crimped to the motherboard edge connector: I would search around and see if such a terminator could be found cheaper than the eBay link I found, I really didn’t look to see if there are any cheaper options. Also compare the cost of any adapter with a drive that does have internal termination, like this: https://www.ebay.com/itm/184429944114
  14. Fizzbinn

    New Internal HDD in Color Classic

    In this old IBM support doc for the IBM WDS-L80 & WDS-L160 (http://ps-2.kev009.com/ohlandl/IBM_HD/WDS_L80.pdf) there is a note that says "Not all models will have terminating resistors. In cases where there is no termination, an inline terminator will be required." I guess you might need something like this: SCSI 50pin Inline Active Terminator IBM 64F4774 https://www.ebay.com/p/1400296571
  15. Fizzbinn

    Eric's conquests

    Mysterious... I hope you didn’t have to trade your voice to a sea witch or make any other faustian bargains!
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