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mpfjr

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  1. mpfjr

    Macintosh Plus memory upgrade help please.

    As it turns out the Plus, as I suspected, does not like fast memory. I found 4x 100ns 1MB modules in my OTHER SE and swapped them. Both computers now report 4MB of memory. The Plus with 100ns and the SE with 70ns.
  2. Howdy there folks! Running into a bit of a problem that I can't work out myself and was hoping you could help. I had a bad Plus motherboard so I bought another one on ebay. It came missing both resistors R8 and R9. But since I wanted to install 4MB that was fine! Well it will not boot up with any of the 1MB sims I have installed. I bought some on ebay that work fine in my SE but those same modules do not work in the plus. I have 4x 1MB 80ns and 4x 1MB 70ns modules. So I took the 256K modules from my old one, put them into the new one (talking about motherboards here) and it boots to happy face icon but no further. Insert a disk, it reads the disk but the desktop and "welcome to macintosh" do not come up. So I removed the R8 aka 256K resistor from the old one, soldered it onto the new one, and it boots up just fine with 1MB total memory. All I can think of is that there is something weird going on where the 1MB memory just won't be recognized by the Plus motherboard. Capacitors on the motherboard looks fine, analog boards (I have two) I re-capped recently and they both work fine too. The only weird thing is that snipping the resistor and plugging in any combination that includes 1MB sims it will not boot up. What do you suggest I try? Thank you.
  3. I did the same thing you did Joe, I just bought a new board. Got a Rom3 with a Woz edition top cover. Now I can take my time and find a $15.00 board on ebay like you did and get the broke one up to 100% again and re-sell it to recoup some of my costs. Thanks for all your hard work and help. It was very much appreciated.
  4. Well I mean it is kinda good news and kinda bad news I guess. I still need the chip but since it is socketed and I have the puller I should be able to remove it and replace it with another. But the bad news is that I can't find one. I need a damaged or non-functional iigs board to pull one from. This might take me a while. You seem to have taken all the good luck with your rom 3 $15.00 board.
  5. Socketed. I have AMI 344S0046-2 So the video controller has control of 3.5 ports? What about smart port because that isn't working either. Someone said on facebook that the smartport uses 5.25 part of things so if the 5.25 is working then the smartport should work. Can anyone confirm this?
  6. I just read that thread thank you for posting it. Yep, that is exactly what I have going on but I don't know what the VGC looks like. I'll try and figure it out. In the mean time, if someone has a iigs board that works they want to sell me cheap, get in touch?
  7. Messing around where I shouldn't have I was making my own cable for a Duo drive that I found at a garage sale without cable. Easy enough to make a cable but I could have made a mistake? Anyways let me tell you how this all went down and maybe you can tell me that my IIgs can be saved. So I've been playing around with ADTPro the last couple days when I had time to sit down. I was making disks and what not. Well this morning I decided next on my list was getting that DUO drive that has been in a box for a month or so working. All it needed was a cable. I found the pin-out guide online and so I found a db25 double ended cable I have plenty of ( I have maybe 10 of these cables) and snipped off one end. Then I exposed all 25 wires and matched up the colors with the pin assignments. Then I took the DB19 end that I got from amazon and started soldering each wire where it goes. Once I was done I connected it to the IIgs, turned it on, IN#2 - Control A - 14B and then started up ADT Pro on my PC and connected and started prodos quick boot. It booted up no problem and I then placed two blank 5.25 disks into the two drives and formatted them. Initially drive B was giving me problems. It would say check disk or drive door. Then it would say disk write protected. Tried a few more times, rebooted and started everything over again and it all worked fine! I was able to format both disks from each drive and I copied over disk 1 and 2 of Conan halls of volta. Considering that a success I got out my floppy EMU with daisy chainer. I plugged the daisy chainer into the back of the iigs, plugged the floppy emu ribbon cable onto the top and the duo drive into the 19pin slot at the rear. Booted up .. can not find start disk or whatever the language is. Oops, I had it in smartport unit 2 from a few days ago. Ok, put it back into smartport disk (floppy emu) and tried again. Still would not boot up. Ok, this is weird. Remove the duo and try again. Still does not find any device. Hmm, ok remove the daisy chainer and go back to the regular 19pin to ribbon cable adapter it came with. (floppy emu).. Fire it up and still can not boot/find device. Ok now I am getting worried... Thinking maybe I zapped the floppy emu, I flash the firmware to mac mode, put it on my mac and it worked fine! Flash it back to Apple II Ok maybe there is a bad smart0.po file. So I used my backup disk. Still no go. I then put it into 3.5 800k mode, still will not boot/load any .dsk file Nothing happens at all. Says no device found. BUT when I put the floppy EMU into 5.25" emu mode, it loads stuff just fine! So as a sanity check I got my physical 5.25 drive (not the duo) and plugged that into my iigs. The disks I made boot fine. So then I unplugged that one and put my 3.5 on there alone. No light comes on, no disk access, nothing. no device found. BTW, I am turning it off and back on after I make these changes. Just so you understand I am not hot swapping anything. Theory, my soldering job on the duo cable may have left a strand of a wire not tucked in and it may have shorted across a two pins and burned up the IWM chip in some way. Or at least in whatever way that prevents anything above the 5.25" drive controller from working. It is like a slot issue or something. I checked the slots in control panel. They are correct and default. Someone suggested a low battery can cause weird things to happen so I removed the battery. It tested at .3 volts. Not 3.0 volts but .3. Yikes. I unplugged the machine and gave it 20 minutes without power and tried it again (not sure why I thought that would do anything) and still same result. So I am guessing I am going to need a new IWM chip which is the square soldered on 344S0041B VTI chip.
  8. Hi there. Clicking coming from the speaker. youtube links at bottom... With the floppy plugged in it makes noise in time with speaker click. I unplugged the floppy and rebooted. Now I don't hear the floppy making noise but the speaker still clicks. Nothing appears on the screen. No chime. Sanity check, I put my 512K motherboard into the Plus chassis and it boots up just fine. That means the analog board, which I have re-capped is fine. All cables from analog board to crt and to mobo work just fine. This isolates the issue to the motherboard. I had a system where it was giving me vertical lines but the floppy icon center screen was fine. I thought it was capacitors. I looked at the mobo and saw a round circle of yellow under one of the capacitor ends. So i ordered a kit and went in there to swap them. Turns out the yellow circle that I thought was capacitor goo came off like masking tape. Well it peeled off with no issue. I went ahead and replaced the capacitors. I did not remove the leads going through t he board. Instead I snipped the wire close to old capacitor and soldered on new caps and snipped off the excess. I made sure that they were in the correct direction and I used a pre-made kit. One of them ( reference this link https://www.classic-computers.org.nz/blog/2015-05-14-mac-plus-checkerboard.htm The cap that is up there closest to the keyboard RJ11 connector is a 50V 1uf and I replaced it with a 100V 1uf. The rest are 16v 33uf. Curious if I messed something up, I referenced this site http://recapamac.com.au/macintosh-plus/ was able to confirm I did it correctly. So as I was saying, I snipped off the resistor, one end of it anyways, that controls the memory type. I then had swapped out for 4x1MB 70ns At some point I had a bong chime but it was a checkerboard pattern so that is how I found the link above. But that checkerboard was only one time. Now it doesn't do anything but click click click from the speaker. I put the original memory back in thinking the memory was bad. Re-soldered the resistor. Still the same result. click click click. I took precautions. Anti-static pad with grounding straps. But we have really dry air and its been very windy here in SoCal. I wonder if it just wasn't good enough. I wonder if I STILL managed to zap something. What else can I check? Per that blog above I tested the voltage of the floppy port. The voltage is all over the place. Not a steady 12v Here is a video of the clicking. https://youtu.be/2YEfFjJQ03U Here is a video of a 512K board in the same chassis. https://youtu.be/DKW8AZCezFM Oh and just in case one of the caps was bad, I re-did them this morning. I also re-flowed the solder around the white plug that comes from the analog board down to the motherboard just in case. According to the link above I should remove the solder and re-do it. That will be my next step. But wanted to check with you guys first.
  9. mpfjr

    scsi2sd help request

    Thank you. I also PM'd you on facebook because a few files you referenced no longer exist.
  10. Probably because they haven't looked at one and made a list yet. If you take your phone and take really close up photos of every capacitor with its board assignment number such as C1, C2 etc and then one photo of the top and bottom of the entire board and send it to them, they will make a kit. That is how I got them to make one for the plus, 128 and 512.
  11. mpfjr

    scsi2sd help request

    Main PC is Windows 10 64 Computer to operate Macintosh SE 4MB and SCSI2SD 5.1 with 2GB SD card What I have installed currently: Basilisk II, HFVExplorer, rufus 3.8, scsi2sd-util, uud32.exe, ciderpress403, ddrelease64. What I am trying to do: I want to partition the 4GB SD card into two 1.8GB partitions. I can do this with the scsi2sd-util sorta by making two systems on the card set for ID 0 and 1 or maybe it is 1 and 2. I can't remember. I want to install System 7.1 (no higher due to resources) and then install some games and utilities to it notably stuffit 5.5 which will help me install other things. I can do this with Basilisk without too much trouble. What I have tried: I have an image file with 7.1 and stuffit that I can launch with Basilisk II. It is in .DSK format. It is a 1.8 GB image but using all the software I mentioned I can't figure out how to put it on the SD card partition 1. What I can not figure out how to do: I can not figure out how to burn that 1.8GB .DSK image to the first partition on the SD card using Windows so I can then put the SD card into the SCSI2SD and boot it up. If I try Balena Etcher it says it is not a format it understands If I try DD I can not get it to work as it just echos whatever I type. Even then I don't know how to use that software. Can someone please teach me how to put an image I make with Basilisk II onto the boot partition of the SD card? I tried following a blog by Stephen but the part where he says to use DD and first type dd --list all it does is echos that right back. Doesn't actually show devices. Can you tell me what windows program can even read the card? when I insert it into PC it just asks me to format it. Kinda like making raspberry Pi images only in that case Etcher works great. I keep reading that I should use DD but like I said, I can't get it to work. At this point I am almost wondering if it would be better to buy a cheap mac computer that I can get on the internet with and just use that to make, read, write images because I think the tools for mac are easier to come by and have more online instructions for. But I can't be the only person doing this and someone must have worked it all out in the past. Thanks for any help you can provide.
  12. Console5 now has them in stock. You can buy an analog board cap kit.
  13. mpfjr

    Mac 512K with Hyperdrive 20 having issues

    Thank you Dog Cow. I see what you are driving at. However the system is currently in pieces on my bench while I await the arrival of the analog cap kit. Yes, I could put it back together without doing any capacitor replacements and do your test and I might do that this weekend. Thank you.
  14. mpfjr

    Mac 512K with Hyperdrive 20 having issues

    Not just this disk. Anything on floppy emu or the physical floppy drive. It just says "welcome to macintosh and then it starts flickering as in the video link. Never proceeds further. Well I can't say never, but I walked away for several minutes to change over laundry and when I cam back it was still there. My theory is that some of the capacitors have gone bad now that I've been using it after who knows how many years. They are not putting out enough energy so the system is starving for power. I have cap kit for the motherboard and I have a forthcoming cap kit for t he analog board. Going to replace them all and see what happens.
  15. mpfjr

    Dead floppy auto-eject motor

    Any electric motor, if seized internally, can be taken apart and cleaned and returned to use. If it is something on the little boards that burned up or something, i'd say it isn't worth going forward. If you know your gears are all ok you might be able to sell the mechanism on ebay and then keep an eye out for a replacement drive.
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