Recent content by techknight

  1. techknight

    Powerbook 180/180c Termination power mod

    This is probably applicable to all the other Powerbook 1XX machines as well as there are little variances between them. I took a gander at the 145 schematics and the 180c is basically the same in this department. The key here is to attach a shottky barrier diode much in the same way you do on...
  2. techknight

    Macintosh Portable horror story

    Of course i had to be the lucky one! On the 540c, i dont know yet. it could even be the rear polarizer film, its not the front. I just cast it aside to figure it out another day.
  3. techknight

    Macintosh Portable horror story

    I have a 540c which has a weird halo in my junk horde as well, I never took it apart to figure out why that was yet or tinkered with it.
  4. techknight

    Macintosh Portable horror story

    But it centers around Hoisden. That's the common denominator here. What can be different between them and every other LCD manufacturer? Thats whats going through my mind at the moment. Theres a lot of process variations, sure. but idk what to think anymore besides that.
  5. techknight

    Macintosh Portable horror story

    Yeeaahhhh thats what i suspected. Its looking more and more like a defective chemical mixture.
  6. techknight

    Macintosh Portable horror story

    Did Hosiden make that one as well?
  7. techknight

    Macintosh Portable horror story

    Yeah the yellowing is normal as the UV and heat from the CCFL affect the diffuser light spreader thing. A lot of my laptops are like that now.
  8. techknight

    Macintosh Portable horror story

    Funny you mention, I have a 180 thats starting to tunnel. It didnt when I got it over 10 years ago, and its been stored in my climate controlled house ever since. So yeah it might be a factor in potentially decelerating the effects, but it will still happen regardless. I do think its a bad...
  9. techknight

    Macintosh Portable horror story

    Hosiden is just shit, they do not hold up to age.
  10. techknight

    Macintosh Portable horror story

    Probably, I forget. im at work and the machine isnt in front of me but it suffered from tunnel pretty badly. I bought another panel on ebay and it had the same problem plus ribbon delamination. I used that one as my baking experiment. Failed.
  11. techknight

    Macintosh Portable horror story

    See thats what I thought initially, but in this case it isnt. the drive electronics/inverter were made by hitachi, but the glass panel itself was made by yours truly, Hosiden (only in a few models, the 750c being one of them)
  12. techknight

    Macintosh Portable horror story

    Well, it didnt work on my color panel. I baked it twice, one I left it in the oven all night long. Ran my electric bill through the roof, and no change in behavior. It might work fine on black and white panels but not color. Since this seems to be common with the Hosiden brand, I have an...
  13. techknight

    Macintosh Portable horror story

    Its all of those Hosiden panels. They all do this, I have Hosiden color panels in my Thinkpad 750C and its the same thing. Tunnelvision.
  14. techknight

    Freshly Recapped Portable - RAM Faults

    Ahh, its probably how the TechStep communicates with these machiens then.
  15. techknight

    Macintosh Portable horror story

    I have not had a chance to try yet