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  1. Callan

    Broken inductance analogue board Mac Plus

    Enjoyed the video! Great job on the restore! I was already subbed, but definetly liked it. Looking forward to the next.
  2. Callan

    Broken inductance analogue board Mac Plus

    Ahhh... When you said it jumped once that would be the normal reason for that. Yeah... you'd know if it was high voltage related. You'd hear it and the screen kinda twerks (jumps, squiggles, etc). I wouldnt think it would collapse unless whatever caused it affected the b+ in which case yes it...
  3. Callan

    Broken inductance analogue board Mac Plus

    Sometimes your anode cap won't seal 100% and you'll get a 'pop' or jump. This can happen when the tube is a little dirty around the anode cap. I clean the area around / unde the cap and normally put some molykote (silicon grease) on the cap to help seal it to the tube. That should prevent any...
  4. Callan

    Broken inductance analogue board Mac Plus

    Your Welcome! Snooper 2.0 is has a bunch of test patterns you can use to check your monitor out. I'm not sure of it runs on a Mac plus, but if not maybe someone can chime in and suggest an alternative. Congrats on your repair!
  5. Callan

    Broken inductance analogue board Mac Plus

    For reference : Looking at the scematics you can see it ar the bottom of the scematic to the left of the horizontal coil. R1 is parallel with l3 (your inductor)
  6. Callan

    Broken inductance analogue board Mac Plus

    (Edited : i re-read your reply to me and realized i misunderstood what you were asking. To answer that... yes. The ferrite core on the base will effect the inductors field (hence its inductance), but to what effect i'm not sure. As long as the internal core is intact i believe it won't be much...
  7. Callan

    Broken inductance analogue board Mac Plus

    As long as the inductors wires havent been broken at the base, there is continuity through the wires and the circuit is Complete, and (fiainally) the core imside the windings are intact I would think it would be fine. I would secure the two broken pieces to prevent and further damage. To verify...
  8. Callan

    IIsi odd sound issue with MacSD

    Lol... and that's why i don't type messages at home when I have the flu. I'd be suspicious of the guy trying to help talking about capping crystals (I've heard it's all the rage 🤪) Honestly though. Good luck! Yeah the header pin would be fine too.
  9. Callan

    IIsi odd sound issue with MacSD

    I'd pin a spare 4 pin molex with my usb out. I'd also make sure its shielded good and have the ground strap from the shield grounded to the molex ground These are standard ground loop preventative measures. Make sure to recheck you caps to (especially around the sound chips). Caps like c42...
  10. Callan

    IIsi odd sound issue with MacSD

    I'd pin a spare 4 pin molex with my usb out. I'd also make sure its shielded good and have the ground strap from the shield grounded to the molex ground These are standard ground loop preventative measures. Make sure to recheck you caps to (especially around the sound chips). Caps like c42...
  11. Callan

    IIsi odd sound issue with MacSD

    I'm spit balling since I don't know anything about the iisi, but... if I was to guess I would think I had a ground loop of some sort. I would tap my power off of the same power feeding the HD.
  12. Callan

    Macintosh IIci Logicboard recreation

    Fantastic! Thanks as always!
  13. Callan

    Macintosh IIci Logicboard recreation

    Any chance I can still get in on this order? I have a iici that's pretty rough (an even worse iicx if anyone has a spare one from a previous order)
  14. Callan

    Transistor BU406

    Yup.
  15. Callan

    Transistor BU406

    Here... Boca has been around for a while and are usually very reliable. https://www.ebay.com/itm/132285532778?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=EnfvGTMMSaa&sssrc=4429486&ssuid=-USjPcGzR1m&var=&widget_ver=artemis&media=COPY
  16. Callan

    Transistor BU406

    Bu406d's have a diode across the emitter and collector (inside the chip). A Bu406 is not a drop in replacement. I have found 406d's on ebay with pretty good success. Make sure not to buy from China (I got a bad batch). I just sourced a us based seller that had good feedback and seemed to be...