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Agrax

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  1. I am always interested in that kind of development. I will take a look how you are proceeding with the development ... maybe I can help with something. The only problem is the time ... work/family/hobby balance and other retro equipment I managed to pile up in last two years, which needs to be put back in working order and thoroughly cleaned.
  2. Seems like I was lucky today. After tracing signals with the scope and inspecting everything with magnifying glass for several hours I was lucky to notice that VGC IC pins and it's socket had micro gaps between. So I took it out and i cleanned IC pins/legs and pushed them towards outside of the IC, and also I pushed contact on the socket towards inside. After that I put everything back and heard a magic "BONG !". And to my surprise ... it works ... again ... TADAAAAA!!! And I finnal setup ... time to dissasemble it and wash the housing thoroughly.
  3. I was just reading your thread "SE FDHD Restoration" you posted above. Is looks much, much, worse on the area around the battery then my case. But this is very useful, thanks! When I bought it, a guy who sold it to me said that Mac was working after he stuffed it somewhere in the attic. I can only assume that this might be true and that the corrosion is only a consequence of battery damage. I did not try to turn it on before I opened it and made an inspection. When I saw the extent of the damage, I first repaired analog board and after that I did recapping, washing and fixing of th
  4. Just for the sake of sharing experience I will post more images here than needs to be post. When I opened the Mac I found battery on the opposite side of the board sicked to the front plastics near the speaker as on the image below (this one is taken from the video I was preparing): It seems that after the battery exploded it made an exceptionally lot more damage on the areas marked on the image below: And a lot of damage on RAM, as the image below shows: So I bought 4 new sticks of 1MB of RAM. After I cleaned everything as
  5. Hi, I'm back with the immage of the IC. Or, even better, maybe you could sell me the whole board? Because the battery damage is substantial (had to put new RAM sticks, the old ones were unusable) and I don't know if some other part is potentially damaged. I did try to wash the board twice and did resocketing, recapping, removed as much rust and battery residue as possible, ... but still, one can never know what is "behind the curtain".
  6. Thank you cheesestraws, I will take a look at it. I need to check if it is worth time and money. Also, I would like to build it by myself if I can do it im my workshop. Hi LaPorta, I will send you photo of the IC, maybe you have it. Althou, I have Eurpean version of the Mac SE FDHD, and I do not know if I can just swap it. But if the P/N is the same that should work.
  7. Finally I managed to do some probing with the scope. Unfortunately the "Gate array" IC is dead, it does not provide a clock signal to the CPU and it is not showing any signs of life. But luckilly I just installed IDE2SD to the Macintosh Classic and it works great. Thank you guys for trying to help.
  8. Hi, yes, ignatio sent the same. Thank you both. I do already have these schematics. I was just hoping that someone has a complete one. I will try to use this one and check some routes on PCB, hopefully it will be the right one. Seems to me that P4 connector is missing ("hard to read image"), which is a missing link for detecting where the CRT signals coming from. Although, P4 is on the analog board schematics. Also one of the rails is quite low on voltage, around 4.37V (might be one of non DC signals). Digital 5V rail is on 4.75V, and 12V rail is on 13.0V ... a bit high.
  9. Hi ignatio, Thank you for the tip about the battery. I thought that this is the case, because that is the only logical thing. I was just wandering if it might not be the case because I found somewhere in the swamp of manuals I managed to download that the battery "should" be inserted on the motherboard. And there was one Youtube video in which someone booted Mac after inserting the battery (could be Adrian Black ... can't remember any more who was it exactly, nor what Mac was it exactly). Also about the battery, it can't remember these things, then it get jealous and ex
  10. Hi to everyone! I am new to the forum, and need some help with my Macintosh SE FDHD. I just refurbished and fixed one Macintosh Classic and it works perfectly except SCSI HDD (which sometimes requires side kick to start spinning), for which I already purchased SCSI2SD on eBay and can't wait for it to arrive. Anyway, I started refurbishment of mentioned Macintosh SE FDHD which was in absolutely terrible condition due to battery leakage (more like battery explosion, as it looked like from inside), everything was oxidized ... totally dead. I washed every part of it, b
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