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About MarNo84

  • Birthday 09/28/1984

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    Rottenburg, Germany

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  1. MarNo84

    Macintosh Floppy Drive to PC Controller?

    Ah ok - right - this makes sense Well then I think I'll stick with one of those LS120 drives
  2. Hey folks, I'm thinking about a new project to start...and therefore I wanted to use a Apple Macintosh floppy FDHD a.k.a. superdrive on a regular PC mainboard/floppy controller. I've got some of these drives around in a box. Is this even possible? I know it's kinda different controller/hardware etc. - it should be possible? I know that for example on IBMs PS/2 the drives are similar difficult to adapt because of different wirings: power+data in one cable - you have to split it at the pcb side. Same or similar goes for the Mac drives? I think it's just a wiring ) cabke issue? I just want to use these functions like autoeject etc. - FYI - that project involves also a MacOS on PC HW thing Marcus
  3. Hmm...you mean, to cut off the internal drive and just use the external? Nope, not yet - worth a try
  4. OK strange - I did try out the dealer diagnostics disk again. Everything went through flawlessly (ok, I'm too stupid to use the keyboard test correctly) except the 5V memory test?? It starts loading from the disk and then nothing happens... I also did another memory direct test that went trough about 280 rounds of memory test without any errors? What could affect the logic and/or memory? I guess I won't do the cap swapping until the real issue is solved. So I need someone who can help me - preferably from germany or neighbour countries around germany - just because of shipping the board I will pay for the repair
  5. Final Update: I also did repair every left bad trace on this motherboard - I also did the first wireowrk again - now it looks better, more professional After I tested everything again, I did use some Urethan 71 (plastic based isolating lacquer) to finish and safe the polished traces from future corrosion. ...and the funny thing is - after all these weeks of adventuring work on this motherboard - I got me 2 other motherboards on eBay one is in nearly perfect condition and works like a charm but the other one is a little bit messed up with uncleaned battery leakage on the slots and connectors. It's already in a cleaning bath with lemon accid the good / awesome thing on the uncleaned one: it seems to be an original LISA 1 board with it's original metalframe - it has still the original writings and symbols for each port - especially the beautiful mouse port this means some exchange with my actual metalframe and motherboard xD
  6. true...damn -but I need to do something with it xD I don't know how to locate the faulty area or parts, so I just want to start doing the oneday neccessary swap of these caps
  7. Yeah great job done! Actually I bought me two motherboards from eBay - they look very clean and in nearly perfect optical condition (untested). Especially one board has the original Lisa 1 / 2 Mouse port - my Lisa 2/5 board already has the "modern" port, so I will swap my motherboard too I think I will keep that repaired board maybe..just as an example/spare and give the other good board to my friend in exchange. Hmm, I will report back when they arrived at my door.
  8. Hmm... I'm actually that far to just swap the few capacitors on the board first and hope to fix the issue ... I don't have anyone near me who could check it or help with oscilloscope
  9. JUST A QUICK UPDATE: it's alive and running again [ ] I finally found the bugger...it was just a broken trace between the lines R1 to C15/R15. I measured every part and trace again and finally found a missing signal - so d*mn easy at the end - no parts needed to swap, Did a quick solder work on that broken trace and everything works like a charme again The last steps / work to do will be the still cut serial connectors. That's a lot of wirework to do - I will rethink about that - no one needs serial connectors on their LISA? Everything was cleaned and neutralized - so no future damage. Well, I think this is done - any future updates will come here on the forums and on my repair blog / on my homepage and yery soon on my YT channel too - especially that complete repair process was recorded on every important step. Soon I will upload a special repair video on my channel as well. Thank you all for your assistance and your helpful advices
  10. OMG! Wow - good job Well, for my serial connections, I assume I have to do the same...- besides my connectors/slots didn't look that much corrodet. What did yours look like? Have any pictures? I will swap the small parts and report back ...I don't want to remove the slots
  11. Ahh wait...maybe there was an misunderstanding I didn't put the cardcage or boards into another working LISA - no, I just used my own LISA to test everything out. I did put the original Setup into my working LISA and there I have the same bad behavior with the CRT output. It is definetly something on that motherboard - not the CRT or adjustment/analogboard or any other part of the CRT/Videoparts of the LISA if it would be something with the adjustment or other video parts - well, then my original working card cage would't work either - but it works.
  12. Hmm, that's a good point - something I didn't think about... So - what could be in that logic 'circuit' that could be my problem? Are there any steps-by-step check ups to consider?
  13. Hmm..nope it's the same behavior on cold or warmed up start - I tried to let it 'run' for a couple of minutes - 30mins was the longest time I waited. No changes at all - besides a very hot memory board resistor( I think that white, big 'resistor' on the memory board get's usually darn hot?) I mean, it hurts after a few seconds, once it's heated up - this takes about ...hmm..5 or 6 minutes? The strange thing is...I can do a manual reset and then it 'seems' to startup normally - until I try to load any SOS or Apple Emu Disk. Well, the confidence Disk starts up like a charme and passes all tests
  14. Yeah, if I would get any kind of working sceen on that CRT I would try these adjustment pods to stableize The fun fact is: if I put MY motherboard with all the cards into THAT Lisa - it works perfectly - even the internal CRT. So,..I doubt it is any wrong adjusted pod on the CRT unit itself? If it is, wouldn't it the same bad screen on my working parts? Anyway I will give it a careful try these days - let's see, I will report back.
  15. Hi, sure, just a few moments ago the upload was completed: https://youtu.be/G-5XTGIdiIs Excuse my camera movements - this time I didn't use my tripod/stand it's just a short video of 2 sessions - just a short demonstration of the behavior. It's in gemran language - I will put some subs later to it. When I completely finished this repair project, I will cut a complete 'documentary' of the whole project and repair process