Re: Schneider D486 20 - fixing a weird and broken PSU

Posted on 2024-03-02, 21:03

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by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi Short Update: Replaced the Cap und -12V regulator with no difference. Currently I'm now concentrating on the SMPS-Controller daughterboard. I'm powering the board with a regular 12V power supply. This gives me the possibility to measure with the scope. I also dug up an application note: https:// …

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Re: Schneider D486 20 - fixing a weird and broken PSU

Posted on 2024-02-25, 08:38

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by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Good Morning Unfortunately it is not the same. I could only find one picture on a german site (http://retro-net.de/?id=73 / Click on the pictureof the system and then "right" two times). It looks a bit similar with the daughterboard but still quite different. The negative Voltage is created with a …

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Re: Schneider D486 20 - fixing a weird and broken PSU

Posted on 2024-02-24, 19:36

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by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi I did all tests with 4 sacrificial harddrives connected to the PSU. These are rated with 0.6 amps wich exceedes the minimal load of 2 Amps a noted on the PSU itself. Thought about lightbulbs too but didn't have any around so the harddisks were the way to go. In the direct vicintiy there is one …

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Re: Schneider D486 20 - fixing a weird and broken PSU

Posted on 2024-02-24, 18:27

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by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi actually I'm not sure. When inspecting the pcb I did checkfor continuity and everything was fine. To be sure, I added a wire between the solderjoints. On the other side of the board are I beleive an inductor, -12V regulator and an potentiometer. greetings dura-zell

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Schneider D486 20 - fixing a weird and broken PSU

Posted on 2024-02-24, 14:59

by

by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi Currently on my bench sits a "Schneider D486 20" As the name implies, its an 486. Specifically an 486-SX, clocked at 20MHz. The whole thing is a bit weird as there are almost no infos on this machine on the web. (No, its not an CPC type machine and not something in the line of the "Euro AT", both …

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Re: Creamware Tripledate - any good

Posted on 2023-05-10, 19:29

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by dura-zell

in Marvin \ Sound

in Marvin \ Sound

Hey Tiido Thanks for the explanation - it confirms what suspected. So try it out my best option would be to get hold of the software & manual. Apart from this it makes more or less a nice decoration. A bit of a pity, would loved to see what it could do and a doubt I can get the missing parts. …

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Creamware Tripledate - any good

Posted on 2023-05-07, 11:57

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by dura-zell

in Marvin \ Sound

in Marvin \ Sound

Hi A friend gave me a Creamware Tripledat. Apparently from what I found online, it is a (semi)professional Audiocard - mainly intended for digital recording. Beside 2 SPDIF, it has Midi and a line-out. (I'll attach a picture). I'm not really into audio production - so the question is: Is'it good for …

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Re: Weird issues with archiving software / Memory configuration issue?

Posted on 2023-04-17, 20:49

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by dura-zell

in Marvin \ Software

in Marvin \ Software

Hi I thought I mentioned that I'm trying to set up a DOS build. This was the reason for posting my config.sys and autoexec.bat in my initial post. Thus I also did not install any graphics drivers. I tried to install Win95 (successfully) but it was only for testing. All other tests mentioned above …

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Re: Weird issues with archiving software / Memory configuration issue?

Posted on 2023-04-17, 20:03

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by dura-zell

in Marvin \ Software

in Marvin \ Software

Uhm - not sure if the preferred method to add information to a post is a new post or editing the existing one - for now I'm adding answers to existing posts. Please bear with me ;-) Anyway: I swapped the ATI 3D Rage II for an Elsa Winner 1000 Trio and now everything works. I can use the 7zip …

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Re: Weird issues with archiving software / Memory configuration issue?

Posted on 2023-04-17, 19:21

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by dura-zell

in Marvin \ Software

in Marvin \ Software

Hi Thanks for the ideas. I did manage to test some more - I suspect that there maybe something wrong with the Board and/or CPU. doshea: I assumed that the executable from my link was specifically compiled to run on old computers. Additionally I tried several other things like tar, pkzip/pkunzip etc. …

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Re: Weird issues with archiving software / Memory configuration issue?

Posted on 2023-04-15, 23:18

by

by dura-zell

in Marvin \ Software

in Marvin \ Software

Short update: pkunzip 2.04 seems to work - at least its not crashing the computer. Anything newer will show the symptoms as described above. Still no idea why this is happening though. Greetings, Dura

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Weird issues with archiving software / Memory configuration issue?

Posted on 2023-04-15, 22:10

by

by dura-zell

in Marvin \ Software

in Marvin \ Software

Hi I'm actually not 100% sure if I have a hardware issue or a configuration issue, but currently I think it's a software / configuration issue, so I'm posting here. I'm currently trying to move some software to my new Retrocomputer. My way to go would be to load achived files via network and unpack …

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Re: FIC PA-2002 - serial port / mouse

Posted on 2023-04-10, 20:25

by

by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi Indeed all my brackets are what is called "a" in the picture above. I resoldered one to fit scheme "b" and now my mouse is working. Learning something new everyday - I wasn't aware that there are different pinouts for the headers on the mainboard. Thanks for the pointers, now I can continue my …

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Re: FIC PA-2002 - serial port / mouse

Posted on 2023-04-10, 08:47

by

by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi Thanks for your reply. I measured them - looks like they're all the same and to make it work I would need to resolder the pins on one of these. Either that or I can find documentation on this card (where my brackets are working): top.jpg front.jpg back.jpg As said: It looks like a Goldstar GW451C …

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FIC PA-2002 - serial port / mouse

Posted on 2023-04-09, 23:42

by

by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi After a long break due to some personal stuff, I'm continuing my Retro-Journey. My current project involves a FIC PA-2002 with a P133 on it. Can provide more details if needed / wanted but it's quite late here now. Back to the issue at hand: I can't get the mouse working. Not for the life of me. …

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Re: Got an old Computer - can I rescue it?

Posted on 2022-02-04, 10:07

by

by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey Guys Some personal stuff forced me to take a long break, hence this really late answer. I do not want to revive this necro now, just apologize for not replying anymore. On the plus side, I now have a proper place for working on this kind of stuff, including workbench and equipment. But for this …

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Re: Got an old Computer - can I rescue it?

Posted on 2021-08-07, 13:43

by

by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Those traces don't look too bad honestly - you should be able to restore the connection using just solder. If not, a piece of wire will easily stick to such wide traces. I'm more concerned about the area between the ISA slots. Hard to reach for cleaning and fixing. Still don't want to desolder them …

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Re: Got an old Computer - can I rescue it?

Posted on 2021-08-06, 18:48

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by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey took the sunny weather for a chance to bring the case into the garden for cleaning - so a bit less time for working on the board. Made some progress anyway - worked on the lower half of the board - mostly the remaining ISA slots and gave the area around the power connector a second treatment. …

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Re: Got an old Computer - can I rescue it?

Posted on 2021-08-05, 23:10

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by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey Making progress: letting it soak a while with kitchen towels did the trick for now. I got more green stuff removed than during the other attempts where I only used the brush. Still need to clean the lower ISA slots and the areas between all of them where I didn't reach with the toothbrush. I'll …

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Re: Got an old Computer - can I rescue it?

Posted on 2021-08-05, 18:22

by

by dura-zell

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi all Thanks for all your input. Regarding the Board itself: I agree - this is not something special. And it shouldn't be. It would be quite sad if I got myself something special and the ruin it because of some stupid mistake due to lack of experience. Nonetheless: its "my" board and so - if it is …

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