Re: Do all socket 5 motherboards support the 2X multiplier?

Posted on 2018-07-06, 18:49

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There are only two pins on the CPU that set FSB multiplier, even if motherboard doesn't support multiplier settings via jumpers, you can wire "mod" CPU pins or socket itself. It means that all socket 5 and 7 motherboads could accept and work with every P1 released.

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Re: How do I pinpoint which specific vram chip is faulty?

Posted on 2018-06-29, 12:25

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

Welder's clamp will hardly exert enough force for BGA to reconnect, also, rubber base would absorb fairly large ammont of force in the form of deformation (unless it's harder than that of car tires). You need to use either F or C clamp with thread and a wooden base (medium hard, like birch) the …

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

Posted on 2018-06-27, 19:46

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Geez, he did not break his cat in half, why everybody is so concerned about some common laptop. Here are some refreshing videos for those in concern: https://www.youtube.com/watch?v=vLqTSUI-NdU https://www.youtube.com/watch?v=E3OlkwESmYM

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Re: How do I pinpoint which specific vram chip is faulty?

Posted on 2018-06-27, 16:04

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

Had similar problem with my Albatron GF4200Ti, except video corruption could be seen only in 3D apps and it was minimal. Tried to locate bad memory IC using VMT, but memory addresses, that returned corrupted data, helped me little to nothing, because you need to know EXACT memory ICs organisation in …

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Re: Unidentifiable memory power supply controller on Nvidia 8800GTX

Posted on 2018-06-21, 11:48

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

Best match I could find, by comparing PCB layout and datasheets, was a RT8805.

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Unidentifiable memory power supply controller on Nvidia 8800GTX

Posted on 2018-06-20, 17:10

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

Hello, I have hard time identifying part value of my 8800GTXs memory power supply controller, which is marked as U501 on PCB (picture from the net): http://www.rom.by/files/IMG_1602.JPG Part code on my controller is AT-9E . All I could figure out about it, that it's a 2-phase buck converter …

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Re: Yellowed CRT Monitor

Posted on 2018-05-30, 03:02

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'd just disassemble the thing and bleach plastic with hydrogen peroxide. Disassembly of a CRT is nor dangerous (if you leave it powered off long enough to discharge/discharge tube itself manually) nor difficult, just make right tools if it has internal clips. Sanding or painting would ruin it …

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Re: Diamond 3dfx Voodoo 1 problem!

Posted on 2018-05-29, 03:47

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

How do you identify a filter cap? If we are talking about bypass capacitors, then good indications of it being a bypass are: it's connected as close as possible between an active components positive power pin (Vcc) and ground, also several different value capacitors might be connected in parallel …

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Re: Diamond 3dfx Voodoo 1 problem!

Posted on 2018-05-28, 19:56

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello, welcome and congratulations on a nice find! All of the missing capacitors are simple bypass caps that can be generally ignored while testing any card/part. Note that those capacitors are grouped by two and are randomly connected in parallel, so specific cap number on PCB tells nothing about …

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Re: Voodoo 5 killed itself. Fixable?

Posted on 2018-05-26, 14:08

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

derSammler wrote: Pretty much bad video memory. That or some memory related contact under one of the GPUs had detached.

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Re: Can You Use a S.E.C.C. Slot 1 Heatsink Meant for Pentium II's to Cool S.E.C.C. II Pentium III's?

Posted on 2018-05-25, 00:28

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's possible, but the end result would look like something like this + heatsink.

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Re: Help identifying some components in my 5154 Monitor.

Posted on 2018-05-15, 22:27

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

If resistors are still around, he could try finding a break in resistive film and measure resistance of both sides from it, that way both sides could be summed to find resistors real value.

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Re: Trouble with motherboard

Posted on 2018-05-12, 18:05

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

IIRC the last connector on floppy cable is designated for A: drive and others below it, for B: drive.

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Re: Strange issue with Chaintech 5VGM

Posted on 2018-05-12, 17:45

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I had similar experience with DFI k6bv3+/66 MB. I got it in horrible shape, all stripped out of elec. caps and inductors, after repopulating missing parts it booted, but only with L2 disabled, couldn't find any cut traces on PCB, swapping ram/cpus didn't help, reducing clock freqs didn't help either …

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Re: Asus V8460 ultra

Posted on 2018-04-22, 14:54

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

Just by looking at given photo, you can tell that it's a silicon diode, probably with a part number of D5, which is a center tapped diode. You can substitute that SMD part with any silicon diode of the same or greater current rating.

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Re: Looking for Diamond Stealth 64 PCI BIOS (S3 Vision964)

Posted on 2018-04-20, 21:38

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

but there is no market or anything special going on with them atm they just gather dust in storage... LOL Heh, the definition of NOS. I wouln't mind doing some soldering work. Sooner or later I'll restore that card, but you got to act fast, because with each passing year required parts are getting …

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Re: Looking for Diamond Stealth 64 PCI BIOS (S3 Vision964)

Posted on 2018-04-20, 20:57

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

Hmm, I would have asked you for your preferred source for NOS computer parts if you hadn't revealed it :) Not too long ago I was looking for a whole Voodoo1 chipset, but couldn't find any trustworthy source. Was about to buy two faulty V1s from ebay, when just a day before purchase I got offered two …

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Re: Looking for Diamond Stealth 64 PCI BIOS (S3 Vision964)

Posted on 2018-04-20, 20:22

by

by SSTV2

in Marvin \ Video

in Marvin \ Video

Nice desolder, are you replacing original graphics processor with NOS one?

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Re: GA-468VM / RP2 resistor /motherboard repair

Posted on 2018-04-20, 19:22

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Allright, it's a typical 4.7k resistor pack, with part number of A472J. Exact same res-pack is used at RP8.

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Re: GA-468VM / RP2 resistor /motherboard repair

Posted on 2018-04-20, 17:58

by

by SSTV2

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello and welcome 😀 I own this MB (GA-486VM) and it's a helluva overclocker I could say. I'll dismantle PC with it and post part value later this night or tommorow.

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