
cannfoddr
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So the last few parts turn up and I made some progress. This is my second ever trace repair, first one on a mac. Its just above C2 on the left: The whole board is now having a well earned bath in IPA after a good scrub down with an anti-static brush: I'll let it soak overnight then dry it off for a couple of days - then we will see
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Am in the process of doing the recap but I broke a trace (see my recap post). Have the wire for a repair but waiting for Amazon to deliver some solder mask, am going to practice my trace repair on a prototype board from another project before I move on to the mac logic board. Washing up bowl, IPA, and anti static brushes are standing by for the clean and soak.
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is the cable for an SE/30 - I am looking to build one of these and replace the logic board connector. Do you have a part reference for the connectors?
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So almost finished the recap today MOSTLY went well BUT looking at the photos above I think I damaged a trace when desoldering C2 - you can see it in the above photos. I have some thin wire and solder mask on order so I will need to fix the trace before I can replace C2. Fixing traces is well out of my comfort zone!!! I also managed to somehow re-block the hole by C2 and it was a total pain to get the solder out again - I managed in the end with an oversized solder tip and some wick but that is probably how I damaged the trace in the first place. I used 25v Tantalums
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My Mouser order turned up today so I have started on my first ever recap on the newest SE/30 with the vertical scan problem. So far I have removed all the caps, cleaned up the pads, cleared the holes, and done and initial swab down of the board with IPA. Here is the board: And some close up shots I have looked at the traces after cleaning and everything looks pretty tidy. Next step is to recap with solid tantalums and radials as pe
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Just pulled the drives out of my working SE/30 and noticed that the HDD bracket has an LED at the front that does not seem to be connected to anything: I am assuming their should be a connection between this LED and the HDD, looking at the HDD itself I can see what I think is an LED jumper top left on the following: Will I need anything other than a pair of wires and some 2 pin connectors?
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Opened up my other SE30 project today and discovered a Shiva Etherport SE30 card with a Shiva Access-T daughter card. It looks to be in excellent condition with a D-Connector and what looks like a 10-BaseT connector. Not done any testing yet - recap comes 1st ofc. Here is the card: and here is the daughter card: There are 4 dip switches all off at the moment on the back of the Access-T card, I suspect they may be to do with switching between the DIN connector and the 10Base-T. Not found any documentation or drivers yet, assume there must be so
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So after 2 days of messing with this thing I have decided to give up and turn it into a fish tank of something.... Ok calm down I am, of course, joking I just did what I should probably done in the first place and dug out my EXISTING Mac SE/30 and tried some strategic swapping of components between the two. The NEW mac with the EXISTING logic board - works fine (Existing logic board has
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I don't have access to a scope. I'll start with the recap. For cleaning what's the best approach in the absence of an ultrasonic cleaner? I have access to IPA and swabs and a toothbrush. I've read comments about using a dishwasher but that sounds scary! I've looked at cheap 10L ultrasonics on Amazon but I am uncertain.
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Recap is planned, but I would like to see the display working first - and yes there is a thread in the classic forums...
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Adjusted the cutoff and desoldered J1, Flyback, C15 and L1 now I have a horizontal line. Its a start but not sure where to go next? Thanks to everyone for suggestions. Will post some more photos later.
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So it turns out the CRT is not dead - thanks for all the pointers here. I adjusted the cutoff and re-soldered J1 C15 and L1 and I have signs of life - I now have a horizontal line. I've read the docs on this one and have continuity checked J4 through to the logic board connector - that's OK. Not sure where to go next but I plan to do some more reading around and see what I can come up with.
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See above - good point, there is also a low quality startup vid.
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My Movie.mp4
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Here are some JPEGs... Motherboard: Ram slots 4 with metal clips and 4 plastic: 4 x 1MB (large) and 4 smaller modules like these: Some capacitor shots - they will get replaced but look ok visually: Lots of crud on Fan and inside of case, top of display is black when cleaned with IPA: Analog board: I found a battery coded 10 89 which I am guessing may be October 1989 which was intact: All in all a pretty tidy machine - 2 manuals and a burgundy carrying ba