Re: Optiplex GX280 Help

Posted on 2020-07-30, 16:55

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Could you try taking out the CPU and cleaning its contacts with IPA ? When you took the cooler off to replace the thermal paste, you might have caused it to move and not have good contact. Make sure to clear the CMOS after this as well.

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Re: 286 Motherboard repair - Please assist

Posted on 2020-07-30, 16:50

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi all, a sad update, Unfortunately another capacitor blew, when I powered it on, and I saw smoke elsewhere on the board, and ended up discarding it. As others said above, there is no reason to discard it just because another capacitor blew up (as I said, it's a common issue), especially since it's …

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Re: Problems with QDI v4p895p3/smt V5.0

Posted on 2020-07-28, 14:08

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Parni wrote on 2020-07-28, 13:37: Is there a convenient way to compare the images? Any hex editor should be able to compare two binary files. The one I use is called HxD.

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Re: 286 Motherboard repair - Please assist

Posted on 2020-07-28, 11:27

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A CR2032 battery holder on a 286 board, that is something you don't see everyday! Could you take a photo of the entire board ? And yes, the board should work just fine after you replace that capacitor. Tantalums are known to blow up when they age.

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Re: The Ultimate Hardware 2019 project- a new, modern TH99

Posted on 2020-07-26, 09:23

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Am asking if you could create a page for: Hard Disk / Floppy Controllers > 16-bit ISA, IDE > Holtek EOI-2A, there is nothing in TH99 or the original MH Library. Based on this: https://www.vogons.org/viewtopic.php?p=878530#p878530 attached Datasheet for HT6550A/6552 We are planning to add the …

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Re: TS-486 motherboard (ALI Socket 3)

Posted on 2020-07-25, 09:27

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I managed to find this manual (from elhvb.com). I enhanced it a little bit, so it's more readable: Filename TS-486_enhanced.pdf File size 1.06 MiB Downloads 8 downloads

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Re: Socket 3 motherboard identification

Posted on 2020-07-22, 16:39

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by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Looks a lot like this one: https://arvutimuuseum.ee/th99/m/E-H/32077.htm

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Re: ASUS PVI-486SP3 Chipset Revision vs BIOS Version question

Posted on 2020-07-21, 13:29

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by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Usually, the datasheet of the EEPROM will tell you what is the programming voltage. You just have to look up the chip's part number. There is also this file on the ftp mirror, maybe it helps: Filename index.txt File size 1.67 KiB Downloads 2 downloads

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Re: The Ultimate Hardware 2019 project- a new, modern TH99

Posted on 2020-07-21, 13:18

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not sure if this is the right place for this comment but the ASUS P2B-S supports Coppermines too depending on the installed voltage regulator chip. I know. The info on that board was completed a while back, when Coppermine wasn't added in the database yet. It has been added since then. It's coming …

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Re: PSU Dilemma

Posted on 2020-07-18, 12:02

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by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Always use a multimeter to check voltages. I wouldn't trust any motherboard's voltage sensors.

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Re: The Ultimate Hardware 2019 project- a new, modern TH99

Posted on 2020-07-18, 11:46

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's time for an update! We've been working hard in the last month on the motherboard database, adding photos of our own boards, adding BIOS images and manuals, fixing the many mistakes in TH99 (yes, there were lots of mistakes). With the help of mr_Slug, we've been able to implement a chipset …

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Re: So... I picked up a simple unassuming beige AT computer and it turned out to be this....

Posted on 2020-07-14, 16:23

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by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You got really lucky with this find. Don't know what specific zone you're from, but I don't get this amount of cool retro stuff in one case at my local flea market. Just bits and bytes here and there.

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Re: DFI Lanparty NF4 issues

Posted on 2020-07-08, 19:58

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello all, I discovered this forum and it seemed like the right place to go for retro help. I just picked up a DFI Lanparty NF4 Ultra-D motherboard along with an Athlon 64 3000+ ( I ordered an Opteron 170 but I don't have it yet). As soon as it came in the mail, I set everything up. I have …

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Re: Bought these (retro) hardware today

Posted on 2020-07-04, 08:02

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by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Managed to get these things today: Filename 20200704_102240.jpg File size 1.52 MiB Views 509 views 2 x Celeron Tualatins @1.2GHz 512MB SO-DIMM SDRAM 2 x 256MB PC800 RIMMs 5.25" floppy disk box All of them for just 8€.

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Re: Tualatin upgrade - too much current?

Posted on 2020-07-03, 12:10

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

However I'm comparing two different CPUs with the same TDP running at different voltages. That slipped trough my fingers. If you have two CPUs with the same TDP, but different process nodes (thus different voltages), then you are indeed correct. It seems like sometimes I'm not paying enough …

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Re: Tualatin upgrade - too much current?

Posted on 2020-07-03, 11:37

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oetker wrote on 2020-07-03, 11:32: P=U*I, so for the same power, when decreasing the voltage, the current must increase. P is not a constant, it will adapt to the level of voltage. Why do you think that you can run LEDs from a CR2032 battery just fine, but you need resistors if you plan to run them …

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Re: Tualatin upgrade - too much current?

Posted on 2020-07-03, 11:18

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's the other way around, voltage dictates how much current the CPU draws. If you give it more voltage, it draws more current, thus increasing the power that the CPU uses.

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Re: Strange BIOS Date issue (Reset to year 2094) with Chicony CH471A Rev 3.00 Motherboard

Posted on 2020-07-03, 11:09

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I've had a similar issue with my IBM PC 300GL. It went foward to the year 2037 or something like that (after being unplugged from the wall for a few months). It happened only one time for me, so I didn't get a chance to debug this issue. You could check the voltage of the Lithium battery, it could …

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Re: GPU for a Compaq Deskpro EN

Posted on 2020-07-03, 11:05

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A Tualatin 1.4GHz should be on par with your current CPU in terms of power consumption (because of the newer 130nm node), so nothing to worry about here except CPU compatibility with the motherboard. IMHO, unless you get low framerates (sub 20FPS), the FX5600XT is good enough. If you still want to …

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Re: Problems with QDI v4p895p3/smt V5.0

Posted on 2020-07-02, 19:07

by

by computerguy08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Heh :) yes my mistake, you are right. These should be suitable? https://www.ebay.com/itm/10PCS-EEPROM-IC-WINBOND-DIP-28-W27C512-45Z-W27C512-45/123882775460?_trkparms=ispr%3D1&hash=item1cd7fd23a4:g:~9QAAOSwLpRdXpAi Yes, it should be a good choice. Here is a chip support list for the TL-866 (for …

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