Re: 386 motherboard repair - CH-386-25D/33A

Posted on 2020-11-21, 01:44

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, Hoping someone can give a lead on find the schematics for my old 386 motherboard I found. Unfortunately it looks like battery leakage took out some traces and there's a small blown ceramic capacitor I can't get a part number off of. The motherboard info is: Model: CH-386-25D/33A P/N: 001-00386- …

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Re: Soltek Motherboard Start, Post, then stop. Can you help me ?

Posted on 2020-11-20, 23:37

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Are you connecting both PSU connectors ? 20pin + 4pin ? Also: some boards will not boot without a good battery, it is rare but I own a few, most are OEM styles of a retail board.

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Re: PSU Wattage/Amperage Help

Posted on 2020-11-20, 23:30

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Anyone know if the Sound Blaster 32 CT3600 ISA soundcard needs -5V? It’s similar to the awe32 and awe64 so I’d bet it is the same as those, so if you don’t know about the ct3600, anyone know if the awe32 or awe64 need -5V? If yes for any of these, any idea on the amperage on the -5V needed? If it’s …

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Re: I thought Fat 32 was 32gb max

Posted on 2020-11-20, 03:29

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

32GB was just an artificial limit imposed by WinXP because MS wanted you to use NTFS. The official excuse is that FAT32 starts to become slow and inefficient with larger partitions, e.g. because of larger cluster sizes. Yeah XP can work with bigger than 32GB FAT32 partitions but it will not allow …

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Re: MX86010 VGA card

Posted on 2020-11-20, 02:40

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I see, well, did some more searching and I think I found it, see attached. Great find ! I did a quick search and on Octeks HK site there is no reference to that video card/driver. Seems they only included the recent stuff from early 1990's. Here is the link in case anyone needs it: http://web. …

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Re: Adaptec 29160 issues, BIOS not working unless card is bended?

Posted on 2020-11-19, 23:51

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The only thing that comes to mind is when the card is inserted is it fully seated in the slot. I've had a similar issues with a build cause I somehow used standoffs that were about 1.25mm too short and the motherboard sat just a tad to low for the cards to make a proper connection in the slot Yes ! …

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Re: 5.25" Floppy drive support.

Posted on 2020-11-19, 17:43

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

AFAIK the socket 478 P4 boards were the last to fully support 2 floppy drives (as far as retail boards). There are socket 775 boards that support one floppy that can be either 1.2Mb or 1.44MB. The Asrock Penrynn allows one floppy drive but can be a 360k, 720k, 1.2Mb or 1.44Mb. That being said, I …

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Re: How to test 30pin SIMMs ?

Posted on 2020-11-19, 16:43

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Most older 286 and 386 motherboards that have 30pin simm sockets will only work with 256k, 1Mb or 4Mb simms. Good examples is the ASUS ISA-386C or FIC LEO 386's. I have some 2Mb 30 pin that only work in a specific AST motherboard (and an older Apple Mac) What motherboard are you trying to test them …

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Re: What retro activity did you get up to today?

Posted on 2020-11-18, 04:58

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nothing special... reworked some old Labtech speakers and got MusicMatch working under WinXP on an old soc775 machine. Not really very vintage (think the speakers, motheboard, etc are 2002 era) but was fun and it all works. Did not take pictures of reworking the speakers but was nothing special...

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Re: Mitsumi CD-ROM Drive Not Being Recognized

Posted on 2020-11-18, 04:09

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

At this point, I would remove the cover of the CDROM drive and make it work like that to see what it does with a disc and without a disc inside. See if the laser moves after closing it or not, careful with the laser light, do not look at it directly. Does the tray open and close without any issues? …

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Re: Mitsumi CD-ROM Drive Not Being Recognized

Posted on 2020-11-18, 00:20

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a Micron PC with a Pentium 66MHz and a Mitsumi CD-ROM drive (model FX001D) running off an ISA controller card. I'm trying to install Windows 95 on the machine but I can't seem to get the CD-ROM drive to work, I install version 1.16 of the drivers that are supposed to be for this CD-ROM drive …

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Re: Searching for Motherboard Manual or BIOS for Motherboard

Posted on 2020-11-17, 01:53

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Smack2k wrote on 2020-11-17, 00:50: Can caps that look fine in terms of no bulges / no leaks still be bad and cause things like board powering on but not posting, strange POST error codes? Yes. If the Vreg caps are going bad then cpu voltages are unstable, that can cause lockups, failed POST, etc.

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Re: Mitsumi CD-ROM Drive Not Being Recognized

Posted on 2020-11-17, 01:40

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a Micron PC with a Pentium 66MHz and a Mitsumi CD-ROM drive (model FX001D) running off an ISA controller card. I'm trying to install Windows 95 on the machine but I can't seem to get the CD-ROM drive to work, I install version 1.16 of the drivers that are supposed to be for this CD-ROM drive …

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Re: What retro activity did you get up to today?

Posted on 2020-11-16, 05:20

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some Thermaltake were built well, the PSU with the man holding a thunderbolt looks like a Leadman/Powmax product iirc. Many of those were poor designed but some were better than average, All depends on the model. Some of the older Leadman/Powmax 6100 series were OK and worked as advertised and …

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Re: Need Award or AMI Bios for Opti 82C895 PCI VLB Motherboard

Posted on 2020-11-15, 21:37

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have an a Opti 82C895 MB that has 3 PCI and 3 VLB that has a Phoenix Bios and looking for a suitable Award or AMI Bios for it. The board has VIP Rev A written on it. This is the closest I found that resembles just about all of it with a few different jumpers. https://www.arvutimuuseum.ee/th99 …

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Re: digital DECstation 316sx

Posted on 2020-11-15, 21:06

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Dear all, have some one active link to digital DECstation 320sx ? link in this post no longer active :-( Using the Wayback machine was able to get the page and download all the 316 and 320 files succesfully. Here is the link: https://web.archive.org/web/20190730144216/http://unimatrix.gomtuu.net/ …

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Re: Best new ATX PSUs for Pentium, II, III systems?

Posted on 2020-11-15, 20:37

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That Seasonic PSU should work just fine for a P3-933, am using a similar rated Antec with my P3-1Ghz.

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Re: My First 486 Build!

Posted on 2020-11-15, 04:45

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Recently, I was able to buy a bunch of 486 PC parts, and have decided to try to get one going. I've never built one before, but am familiar with it in a tangential sorta way. I'm relieved that my MB has a standard watch battery instead of a drum battery, for example. Below are a compilation of both …

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Re: Can not find manual or board name

Posted on 2020-11-15, 01:45

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Blue 486 Overdrive sockets are 1 pinned same as socket 3.

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Re: Bought these (retro) hardware today

Posted on 2020-11-14, 20:34

by

by Horun

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not sure if it is considered "hardware" but I bought 3 boxes of "new" floppies today. Not that new considering the year 1989 marked on the boxes. I paid 27 euros total for 3 boxes of them. I am just curious about how much you usually pay for floppy disks nowadays? I guess I wasn't sure how much I …

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