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flowers

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  1. flowers

    MAC VIDEO ADAPTER - 1988

    hmm... but curious is to see what is the video signal exing from it.. is it a composite video or a separated "Chroma/Luma"... just curiosity... I remember the 80/90 projectors but i didn't remember in that a PLUG IN 8 DIN... something much more familiar with some old black&White TV... but again. i'm just looking to understand what signal are coming out from the 8DIN.
  2. flowers

    MAC VIDEO ADAPTER - 1988

    Yes sure.. here a first picture ... is true that i can check where the adaptor is taking the signal in the macintosh plug.. but if anyone have Information about this adapter is welcome...
  3. flowers

    MAC VIDEO ADAPTER - 1988

    Hello! I've the hands over a Macintosh SE/30 that got inside a " MAC VIDEO ADAPTER" with an exit by 8 DIN Plug. IS anybody here that know more about it and/or can let me know the pinout of this Exit ? The adapter is a simple PCB that manage and transfer signals from the logic board to this 8 DIN pin, with true it the 14pin power connector. If needed i can post some pictures. There are 7 pins connected with just one out ( the nr. 7).
  4. Hello, Is anybody here that own some images of different languages then English version for an old Floppy System Disk ? the System 2 Finder 4.1 would be the best but let me know ... In particular i'm looking for an italian and German version. Thank you! Michele
  5. I did this hobby-work time ago to repair/reconnect a broken video flat cable of an M5120 portable owned by a friend; my friend Alex is here in the forum and he need now to follow and try another repair by itself, (seems that this flat are easy broken by people that open this portable); he asked me the details of the repair i did time ago and i thought that this work can be useful for other people as well, so i'm putting these data here; you need to know how to use a soldering iron to connect with a wrapping wire the lost connections that are broken (i did 5 or 6 in that repair) between the upside of the motherboard connector that has exposed contacts and the socket. Below the pin to pin links between the motherboard socket and the video board one, for the solder on the video board i use the contact available on the socket as you can see in the pictures attached. The letters/characters are from A to *, you can see also the to ground contacts (C,O,X,L,U,5,Q,8) and the hooked ones. The correspondence is the following considering the contact on the video board starting from 1 to 24 from left to right : Video board = MB socket picture 1= I, T, C, N,P,3,6,W 2= as 1 3= X 4= F 5= 0, 5) 6= as 5) 7= as 1) 8= E 9= 4 10= as 1 11= V 12= D 13= C 14= M 15= U 16= as 1 17= 2 18= L 19= as 1 20= B 21= 1 22= as 1 23= S 24= A So now, for who has a broken flat on a portable M5120 the repair is easy, check the continuity with your multimeter and then obviously you need to use a soldering iron with a thin tip and just be careful to fix the transparent plastic part that is over the motherboard socket contact with some tape in the way you do not burn it during the solder. The wrapping wire then can be easy placed in the same passage of the flat... but then in it there is just to play a little bit when you rebuild the plastics parts to close the monitor. Michele P.s Happy Christmas to all of the people in this forum!
  6. flowers

    Apple TechStep guide Manuals

    Hi All, Hmmm... seems that the scan work for the "Troubleshoting guide Vol1" is not jet here ... Anyway a renew my request and my best wishes to all of the Forum for this new 2018. By my side if i can get it or even other volumes in other way i'll post them here scanned too. thank you! Michele
  7. flowers

    Apple TechStep guide Manuals

    Hi BadGoldEagle ! To me are fine both; maybe the first version is easier to read on a PDF viewer then a two page; but at the end the important is to get them available. And good if you do the Volume 1 and 2.. so then the missing volume 3 can arrive from omidimo.. and maybe someone else will put then here also the V.4 for who is interested in that too Thank you! Michele
  8. flowers

    Apple TechStep guide Manuals

    Hi Omidimo! Super; to me the one i'm looking for is the one i would like to read about the Vol1; so just the first Troubleshooting guide. By the way i think that when you can scan these docs, these will be usefully for the future also to other guys; by my side i didn't do jet the scan of the only one manual i've that is the "User's Guide", but i'll do soon in the next days and share it here. You can do the scan when you have the time; for now thank to reply and be back when you can do that thank you, Michele
  9. flowers

    Apple TechStep guide Manuals

    I'm sure that someone out there has this Guide to scan! c'mon! lets it be available for all This week end i start doing the Scan for what i've... maybe a good input to get the part i'm looking for. thank you!
  10. flowers

    Apple TechStep guide Manuals

    Hi there! Is anybody here that has a digital scanned file or can scan the "Troubleshooting Guide" of Apple TechStep ? At last i can do the PDF the User's Guide if needed to someone else here thank you! Michele
  11. flowers

    Macintosh SE30 - 26LS30 PLCC

    ... that's sounds the conclusion i was waiting to get confirmed ... was my thought it goes inside to a layer.. but yes the schematic get it nowhere and you are right.
  12. flowers

    Macintosh SE30 - 26LS30 PLCC

    Hi there, A short question for who had experiences over it; Is there on the SE30 board an available point where can be hooked the pin 17 of the UE12 ? (the trace on the board is lost) The AM26LS30 schematic i get online give the ref. "SR-B"; it link to an internal PCB layer but i'm trying to check if i can get it hooked to another point without success, any good ideas ? Ref. https://ia801006.us.archive.org/28/items/AM26LS30/AM26LS30.pdf the S30 schematics portion about it :
  13. Thank you techknight, i checked online this blue ring tester and i think to definitively go to get it in parts to assembly..
  14. i get into the analog board today... having some time to work on by these holiday . I received the flyback spare one week ago; mounted it the result is been .. PROBLEM SOLVED. So all stuff i mention above was linked to the dead Flyback that probably reach its honourable more then 30 years service So techknight was right, and is definitively not an indication the voltages around the T2 and its coils; a ring tester is needed for that or nothing more then a short DC value can be found as i get; now i'm stimulated to get into an homemade ring tester .. i'm looking around some ideas. My best wishes of a nice Christmas time for all of you here and thanks for the support.
  15. Yes bibilit, it seem to be the same/similar problem. I ordered the flyback as i realise to had no working spare ... i'll get it in the next weeks and i'll do a try; my doubt on T2 (01570039) remain and could be then needed to found a right replacement of it, i had no other analog board to get info into it, if someone can measure in a working logic board the voltages at the two side/coils and post that value here could be useful, and with informations of this component at last we have it here in this forum for who will need it as working unit ref. Asap i'll test the board first with a new working flyback; i'll be back here with good or not good problem solving, then i can see the next step, every good thought is welcome. I checked other parts of the board but i didn't found at the moment other potential culprit, Q6 and Q3 where fine, i upgrade Q3 independently to BU406D for the next new flyback trial.
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