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  1. MrGasS27

    What size and angle for a PowerBook 145B screen polarizer?

    Aside from my health issues, I stored my screen without finishing the job because I was about to die, that stuff was nasty :sick:
  2. MrGasS27

    What is the -12V Rail used for?

    I know, I wanted to give an example
  3. MrGasS27

    What is the -12V Rail used for?

    Yep, it could be an issue. If I recall correctly, while digging AliExpress, I saw few buck modules that convert +12V into -12V and -5V, but I should find it again as I don't remember how it was called.
  4. MrGasS27

    What is the -12V Rail used for?

    As far as I remember, the LC uses -5V for sound, but I don't remember the -5V rail in 10 pins computers like IIci, IIsi and Q700, these just want -12V as negative current. As modern power supplies still have the -12V rail, you can restore the -5V rail by doing a thing like this with an LM7905...
  5. MrGasS27

    What size and angle for a PowerBook 145B screen polarizer?

    Thank you for these tips, I really appreciate them. Unfortunately I never used a 3D printed, nor I have access to one, that's why because I wanted to stuff the entire computer (maybe ditching the floppy drive, the keyboard and the trackpad) into a clear utility briefcase, but you know, I might...
  6. MrGasS27

    What size and angle for a PowerBook 145B screen polarizer?

    Thank you a lot for your precious replies. Oh, so, there's another polarizer filter on the back? Sounds like I'll give up on it lol I stored the screen in summer 2022 and never completed the job due to health issues I had at the time, it's half scraped and meanwhile the plastic lid got worse...
  7. MrGasS27

    What size and angle for a PowerBook 145B screen polarizer?

    Did someone discovered what's the correct angle for this screen? The plastic casing is completely destroyed now because of age, but I would like a lot to stuff this powerbook in a clear plastic suitcase to use it as a sort of "portable" desktop Mac. Thank you.
  8. MrGasS27

    Finding a replacement for D1 on a first generation Macintosh LC

    I soldered back the original A3X and now the hole disappeared, I think that the plastic melted during the soldering process or something like that. Well, mystery solved.
  9. MrGasS27

    Finding a replacement for D1 on a first generation Macintosh LC

    Just discovered that unlike the IIci, IIsi, Quadra 700 and other Macs I have, the LC DOESN'T have any GND point on the 2-50 row 🤣
  10. MrGasS27

    Finding a replacement for D1 on a first generation Macintosh LC

    Well, I must say sorry to everybody for wasting your time and, at the same time, I want to say thanks for helping me anyway. I must say that I found this "journey" really funny and, as always, it was useful as every other experience. Diode D3 is fine, I've continuity between termination power...
  11. MrGasS27

    Finding a replacement for D1 on a first generation Macintosh LC

    Replaced the A3X with two 1N4148 just to see if something would change but no luck, the problem stays, the BlueSCSI works only with molex power. However, it works like before.
  12. MrGasS27

    Finding a replacement for D1 on a first generation Macintosh LC

    Thank you again for you precious help. The only problem now is that I need to pay 20€ only for shipping an A3X / MMBD2835LT1G / SMMBD2835LT1G here in Italy, because of this I'm looking for an equivalent component. A similar component that I can easily buy is the BAR43A, which has a forward...
  13. MrGasS27

    Finding a replacement for D1 on a first generation Macintosh LC

    Thank you a lot, I took better photos of D1 and yes, I misread the first value, it's an A3X indeed, I suspected that H was a date code. A3X seems to correspond to MMBD2835LT1G / SMMBD2835LT1G, the only problem is that I can't find this component on sale, I'll do a better research. I'm also...
  14. MrGasS27

    Finding a replacement for D1 on a first generation Macintosh LC

    Hi everybody This summer I broke the diode D1 on my first gen Macintosh LC while testing some prototype boards, since then I need power from the molex plug in order to fire up my BlueSCSI internally, while a BlueSCSI attached to the external port works fine with termination power. I already...
  15. MrGasS27

    Destroyed 2.5mm Digital Audio port and no audio from internal speaker - Sharing my fix

    Hi everybody! As I went crazy the other night, I want to share this fix in case your Digital Audio port is destroyed and your internal speaker isn't working. I applied this fix on my second Quicksilver, a G4/800 2002 version that I bought back in 2017: the previous owner destroyed the Digital...
  16. MrGasS27

    What size and angle for a PowerBook 145B screen polarizer?

    Hi everybody. My hateful PowerBook 145B developed the infamous vinegar syndrome and I'm in the process of removing the second sticky sheet of the polarizer. Right now I trashed everything into a box due to my poor spare time and to the strong smell of the polarizer that was literally killing me...
  17. MrGasS27

    RaSCSI without ICs?

    Nope, I tested it with a IIci and a IIsi, nothing work...
  18. MrGasS27

    RaSCSI without ICs?

    I used RaSCSI with my Macs with a Pi 3 and Zero W, every time with a direct wiring, but honestly it doesn't work so good. My Macs and their SCSI controllers are still alive.
  19. MrGasS27

    Apple Desktop Bus Mouse capacitor list

    Hi everybody! I'm restoring a bunch of Apple Desktop Bus mice that I found in my house, I'm also recapping them and I did a capacitors list. 1x 10uF 16V 1x 1uF 50V 1x 0,47uf 50V
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