Re: Have I killed a motherboard - no power up

Posted on 2023-09-10, 21:57

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My only KT333 motherboard was an Epox that came with a very poor northbridge cooler - it was a passive chunk of aluminum, convex, and barely held in place with some thin and cheap thermal tape. At stock speed, it worked fine, and only (and very quickly) became an issue when I began to overclock the …

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Re: GA-586DX USB pinout scheme

Posted on 2023-09-10, 19:44

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I hope that Jan can help you sort out that BIOS issue. It seems wrong that my super cheap PCChips M520 (VX chipset AT) has working USB and this motherboard doesn't.

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Re: GA-586DX USB pinout scheme

Posted on 2023-09-10, 18:29

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here is a video that covers how to measure DC voltage with a meter. https://twitter.com/JennyChachan/status/1700743568179241293

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Re: GA-586DX USB pinout scheme

Posted on 2023-09-10, 14:11

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you look at this site you'll see two examples of eight pin USB ports. You need to measure the +5 volt pins to determine for sure which yours is - get it wrong and power up with a ground wire connected to the +5... not good. Set your meter to measure DC voltage, and carefully measure the pins, …

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Re: DFI K6XV3+/66 Rev. B1 strange behaviour

Posted on 2023-09-09, 22:41

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The next thing that comes to my mind is the possibility of failing capacitors.

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Re: DFI K6XV3+/66 Rev. B1 strange behaviour

Posted on 2023-09-09, 21:48

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Have you tried a different power supply?

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Re: Asus A7V v1.02 initial power up and then automatic power off issue

Posted on 2023-09-09, 13:49

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Computer won't post, Asus A7V + Athlon 1100

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Re: Modify p8 p9 ATX to AT adapter for -5v rail

Posted on 2023-09-08, 22:03

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There is also the Voltage Blaster: https://www.philscomputerlab.com/voltage-blaster--5v.html

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Re: Agp 4x doesn't turn on

Posted on 2023-09-07, 13:21

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nvidia drivers often force 2X on chipsets not made by Intel. On AGP 4x chipsets other than Intel's, 4x is usually unreliable. I think you are right. I found on asus.com a reg file to enable agp 4x with nVidia GPU but it doesn't work... :-( Maybe I have to change the graphics card or the motherboard …

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Re: Agp 4x doesn't turn on

Posted on 2023-09-06, 20:24

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Reinstalling the Via 4 in 1 drivers in Turbo mode should do it. You can likely use Rivatuner to force it on as well.

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Re: The million dollar question on retrocomputing

Posted on 2023-09-06, 16:09

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It happened with cars. There was a time where I was seriously considering buying a reproduction unibody for my Camaro because it had enough rust that it would have had to have been stripped to bare metal and repaired on a rotisserie. That would have entailed an exhaustive search for someone who had …

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Re: Bought these (retro) hardware today

Posted on 2023-09-06, 14:38

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Warranty replacements can have unexpected consequences. Back in 2005, GE had an issue with some of their refrigerators where the insulation in the doors was too thin. Condensation would build up and freeze in the insulation, and the insulation's R value would drop; their solution was to send …

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Re: Bought these (retro) hardware today

Posted on 2023-09-04, 15:55

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I dismantled the 939 system and cleaned the case. I cheated and replaced only the two popped caps because I only had two caps that were the correct voltage and capacitance, and they were generic unbranded Ebay ones (and they are scarily identical to the failed ones). So that'll do for now until I …

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Re: Bought these (retro) hardware today

Posted on 2023-09-04, 01:52

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I dismantled the 939 system and cleaned the case. I cheated and replaced only the two popped caps because I only had two caps that were the correct voltage and capacitance, and they were generic unbranded Ebay ones (and they are scarily identical to the failed ones). So that'll do for now until I …

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Re: Bought these (retro) hardware today

Posted on 2023-09-03, 20:35

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The 939 looks good, but that atrocious PSU NEEDS to go. The Tyan unit rocks a PC Power&Cooling PSU, later renamed as OCZ if I remember correctly. The label alone was enough to warn me, then I took it out and it weighs about as much as a helium balloon. I have another system with a good PSU, but the …

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Re: Bought these (retro) hardware today

Posted on 2023-09-03, 20:28

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There was a also 775 in a Lian Li case with dual 8800 video cards which I looked long and hard at, but the case had some cosmetic damage, and I already have a 775 system I'm perfectly happy with; there comes a point where you have to stop and say no more.

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Re: Bought these (retro) hardware today

Posted on 2023-09-03, 19:29

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

An ewaste place within driving distance advertised some old cases for sale, so I had a look. A couple that interested me (they had a photo in the ad) were already gone, but they had some good stuff. I have limited space, so I chose to buy two, which came to $40.00. One has a Gigabyte GA-K8U-939 with …

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Re: Super Socket 7 Build - My "new" Windows 95 Build

Posted on 2023-09-02, 13:40

by

by Repo Man11

in Marvin \ System Specs

in Marvin \ System Specs

Setting the display to the actual MHz was a nice touch! did that takes lots of trial and error, or did you find some documentation?

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

Posted on 2023-09-02, 02:29

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Last fall I bought an assortment of old stuff that was quite a haul, and I've been working my way through it. It included two Socket 370 boards; one had a bad BIOS flash and the other needed new capacitors. After fixing both, I wanted to try to use one of the Tualatin CPUs that were included. I …

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Re: Bought these (retro) hardware today

Posted on 2023-08-30, 19:14

by

by Repo Man11

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I was in the neighborhood of my local computer store and today's find was a five dollar, 512 megabyte AGP 7600 GS. So far it is working perfectly, and slightly outscored my slightly overclocked Ti 4600 in 3D 2001 in my Soyo Dragon system. This was after I cleaned it, replaced the thermal paste, and …

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