Re: Fake GeForce 2MX (yeah...)

Posted on 2020-10-12, 12:46

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, the card is 64-bit, says so on the back (was there a MX400-64bit?) so I guess there's no need to check with Everest or Aida. I think I also remember one of my "FX5500" cards having a 5200 chip under the heatsink... Filename GF2MX_fake(back).jpg File size 319.45 KiB Views 754 views

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Fake GeForce 2MX (yeah...)

Posted on 2020-10-12, 11:01

by

by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A heatsink was needed for another project, so I pulled one from an old GF2MX400 card I had in the "non-important" card box. Noticed some shadowing under the markings, and this picked up my interest so I started rubbing the surface with a strong solvent. The re-marking was very well done, in the end …

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Re: Bought these (retro) hardware today

Posted on 2020-10-12, 10:44

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got this MX11800 a while ago for a bit over 1€, managed to deep-clean it (it was really needed!) so now it looks and works pretty good, apart from the trackball which was missing from the start, so if anyone got a spare trackball assembly please give me a shout 😀 Filename MX11800.jpg File size 666. …

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Re: MS-6168 onboard Voodoo3 Cooling

Posted on 2020-10-04, 13:40

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I would take the hacksaw and adjust the fins on the CPU hs to make room for the VGA hs+fan. Alternatively, there are some Slot 1 coolers that "taper off" toward the sides, with one of those there might be just enough room for all to fit without modification.

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Re: ASUS PVI-486SP3: Need specific resistor value

Posted on 2020-10-02, 13:08

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Note that 100 and 220 mean 10 and 22 ohm respectively. (220 ohm would be marked 221).

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Re: ASUS TUSL2-C rear USB ports not working - voltage too low

Posted on 2020-09-28, 21:27

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Volts don't just disappear, you have somewhere a big voltage drop, just follow the path. Can't 100% tell from the picture, but seems there's a (poly)fuse and perhaps an inductor (L20) and a jumper to choose between +5V/+5Vsb to be checked. I have encountered a bad inductor near the KB connector on a …

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Re: Is it safe to use a low noise adapter on a gpu fan from a geforce 4 ti 4200, long term?

Posted on 2020-09-25, 23:59

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by quicknick

in Marvin \ Video

in Marvin \ Video

The low noise adapter must be connected to the red/black wires, not the yellow single one. Unless the picture is intended as a joke 😀

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Re: OmniBook 800CT - exploding tantalum - help (...and moral support) request

Posted on 2020-09-24, 21:13

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Welcome to the forums! Just remove its remains, clean the area and give it a go, might work without it. Or you can temporarily solder any value that fits, at 16 or 25V.

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Re: Help me identify a 286 board

Posted on 2020-09-24, 20:48

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Make sure you have the proper datasheet, there are 206s in different packages (QFP and PLCC) and the pinouts aren't the same. Missing Vcc on any chip is unlikely without extensive (visible) damage to some traces (or almost impossible if the Vcc is routed through one of the inner layers, like on most …

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Re: Fujitsu hard drives

Posted on 2020-09-23, 12:37

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

More interesting technicalities here.

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Re: Fujitsu hard drives

Posted on 2020-09-22, 12:33

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The CL chip failure was the reason Fujitsu left the HDD production market. [...] Wow, had no idea about this. I was somewhat of a fan in the 90's, simply based on the fact that my first PC (that came with a working HDD) had a Fujitsu M1614TAU inside. Nice and reliable, although not a speed demon. …

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Re: DVD drive won't open (it's not what you are thinking).

Posted on 2020-09-15, 17:21

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Or the circuit driving the motor isn't providing the required juice anymore. You can test this by disconnecting it completely from the board and applying 5 volts from a suitable supply. Or to rule out mechanical problems, manually extend the tray all the way. Does it go nicely until the end, or is …

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Re: Photographing processor silicon - starting with a Pentium Pro

Posted on 2020-09-15, 00:39

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maybe just an identifier for the ceramic substrate? Congratulations on your work, a new angle on the silicon die photography (not just literally 😀 )!

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Re: Mapower PD-80 PSU issues

Posted on 2020-09-14, 00:58

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Secondary capacitors appear to be Fuhjyyu "brand", which is one of the worst. Responsible, among others, for the deaths of countless Antec PSU's in the mid-00s. Replace them, and also check the fat one although it looks to be made by Hitachi so it should be still good.

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Re: K6-2 processor in K6 motherboard?

Posted on 2020-09-10, 14:05

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is there a 5v/12v jumper for the Flash chip? Make sure it is set to the correct voltage for what you're using. Or the motherboard could be compatible with one type only.

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Re: Fixing a damaged Sound Blaster pro 2

Posted on 2020-09-10, 13:57

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The OPL3 might work as is, but I wouldn't leave like that. Hard to tell from the picture if the broken pins are barely making contact, if at all, or they remained quite well attached. Maybe desolder the chip, see if the pins break off easily, then connect the remaining "stubs" to the corresponding …

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Re: Asus P2-99B - Attempted repair and failure

Posted on 2020-09-07, 23:46

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A quick list of suggestions, of course there's more you can do but this comes to mind right now: If one cap was blown, more could be bad without showing any signs. Careful when replacing, Asus usually have the markings in reverse (big white stripe is the + not the -, fortunately the + is also …

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Re: Help identifying 286 board with TACT chipset

Posted on 2020-09-07, 23:30

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have added it to UH19 here... Thank you :) I would try a very slow oscillator like 10mhz I wonder if you have a blown chip, hard to test without a stack of spare 286 systems Slowest I have in my parts box is 24MHz, tested with it but nothing changed. I surely have slower ones, down to 1.something …

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Re: Help identifying 286 board with TACT chipset

Posted on 2020-09-07, 11:40

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Of course, here's the BIOS (original LO/HI images, and the two unified in one image via WinHex). The BIOS itself is working, PCem can boot with it. Laser L286_3.rar Played a bit with the board about a month ago, without much progress, after stumbling across a similar one for sale, identified as …

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Re: 486 motherboard information

Posted on 2020-09-06, 23:59

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by quicknick

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, the board supports the 386 but only the PQFP variant. Too bad I don't have one to solder it down. I wonder if it would be possible to choose by jumpers the active CPU (386/486). Anyway, what puzzles me is the presence of a non-working VLB slot.

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