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Re: intel VS440FX (Venus) - Socket 8 motherboard - need help

Posted on 2022-04-07, 12:55

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The board was taken from a scrap yard. so the damage is only in this zone and because they have put a case on top of this board... and the corner or the case ripped out this 4 or 5 conponentes... The only thing i did, so far, was exchange the aluminium eletrolitic capacitors with new ones.. (and …

Re: intel VS440FX (Venus) - Socket 8 motherboard - need help

Posted on 2022-04-06, 20:04

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I see you pointing that the FBl1 is a ferrite bed. Males sense..but... Why the polar settings? Ferrite are supressors.. always beelived that was no polarity involved.. and in the board is a + and a -

Re: intel VS440FX (Venus) - Socket 8 motherboard - need help

Posted on 2022-04-04, 16:24

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Can you take the foto really close in each of the missing components so i can see the markings (wahts write)?

intel VS440FX (Venus) - Socket 8 motherboard - need help

Posted on 2022-04-04, 14:51

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello everyone. Just got myself a intel VS440FX socket 8 motherboard... with a pentium pro 180mhz.. I'm super excited. Got it from a local scrap yard.. When close inspected, its missing some components.. my world just colapsed.. damm. i've figured out thar that the IC ists a NDS9410A power …

Re: [Project] 386/486/SBC 3D Printed Retro Case

Posted on 2022-01-09, 18:01

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Superb...... Does this fits.all baby AT cases? The mounting screens behind.

Re: FIC 486-GIO-VP SMI/IRQ secondary IDE issue

Posted on 2022-01-05, 23:38

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

did you load the cdrom program TSR in autoexec.bat or config.sys ? whst sound card are we talking about ?

Re: HP Vectra ES/12 (286 12Mhz) skips title screens in Wolfenstein 3D (solved)

Posted on 2021-12-16, 16:25

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

can that computer play wolf3d ?

Re: AT Power but with no switch?

Posted on 2021-12-16, 16:22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Can that Mitac power supply be specific to a Mitac computer model with AT power connctors but a electronic switch start like a ATX power supply ?

Re: UMC MB468 or model 1415. Info please..

Posted on 2021-11-29, 12:06

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

cool.... going to check it out...

Re: Dataexpert 8049 (socket3) voltage regulator

Posted on 2021-11-04, 09:18

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Has been difficult to find a D45H2A... mmmm.. going to try to find a replace transistor.

Re: How to set 486DX4 at 2x like 486DX266?

Posted on 2021-11-03, 16:38

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Dx2 at 3v ??? danger.... didin't you change the jumper for voltage ? or do your bios autometic detects the voltage ? undervoltage is more dangerous than overvoltage

Re: How to set 486DX4 at 2x like 486DX266?

Posted on 2021-11-02, 17:26

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

between 66mhz and 100mhz (well 99mhz) the bus is the same.. 33mhz.. So 33x2=66hz, 33x3=99mhz.. thats that simple.. The processor dont scale exactly the same, and a dx4 is not certanly 1/3 faster than a dx2... or 3 times faster dan a dx-33 in a linear way... it all dependes on software and other …

Re: How to set 486DX4 at 2x like 486DX266?

Posted on 2021-11-02, 12:10

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

the change in multiplier is made via jumpers on the motherboard. The dx4 is 3x, and most certanly will work in 2x.. Check your motherboard manual, or markings in the board itself to figure it out where the multiplier jumpers are and how to set them. do you know what model of motherboard you have ?

Re: Need two caps values for Voodoo4 4500

Posted on 2021-10-29, 09:59

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

hmm... actually, it is stange, yeah... the card was taken from a pile of cards at the recicling center.. was not inside an computer.. at least when i grabe it. dont know if it came already loose or was in a computer case.. but the damege in this foto seens like it was beaten, not bits of solder.

Re: Dataexpert 8049 (socket3) voltage regulator

Posted on 2021-10-27, 19:26

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks .. i Will teu to source the transistor and boot the board... Tem o Will dump the BIOS... In a paralel question, would this board booot with no transistor if i use a 5v dx2 cpu? Or...even with 5v CPUs os the transistor nedded?

Dataexpert 8049 (socket3) voltage regulator

Posted on 2021-10-26, 21:44

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello. THIS time i bring a socket 3 motherboard - dataexpert 8049 .. Os missing the voltage regulator for 5v3v operation. Is a Simple 3 pin IC, so i'm guessing is a.3.3v fixed regulator.. but just to BE shure maybe can someone with the same board confirm that. Thanks you

Re: Need two caps values for Voodoo4 4500

Posted on 2021-10-26, 12:58

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I ment well... obviously i dont know the values for that two caps so i went with a relative safe value. 1 uf.. nevertherless i dont think that will be the cause to the major failure of this card. My guess is memory failure and/or gpu failure. that brown stuff is just the left overs of some ruste but …

Re: Need two caps values for Voodoo4 4500

Posted on 2021-10-25, 14:28

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I give you the links for images with better resolution. https://freeimage.host/i/5T2drb https://freeimage.host/i/5T232j https://freeimage.host/i/5T2JEu https://freeimage.host/i/5T2HBe maybe we can figure it out, where to move next... before the reballing, can be something to change before.

Re: Any Sharp PC7000 users on here?

Posted on 2021-10-25, 08:44

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That's a good question... Been a while since i fire it up. Dont remember if i used a specific boot disk or just dos 3.0 boot disk. got to check it out

Re: Fixing up an broken 486 I got from a local radio.

Posted on 2021-10-25, 08:42

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

hmmm

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