Re: Something went poof, need ideas for troubleshooting!

Posted on 2021-07-04, 18:21

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Lol, I keep wanting to describe my relationship with the seller (a large business selling PC parts)... Long story short: the fact I installed and messed up this board is unrelated to the fact they still owe me a "Tested. Working P55T2P4 rev 3.10". It's a long story with lots of defences why I am not …

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Re: Something went poof, need ideas for troubleshooting!

Posted on 2021-07-04, 16:18

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

yeah I am not very consistent with listening to myself. You think I didn't see how this can be a very stupid thing to do? - I did! And thought "nah it's so cool I am doing it anyway" My problem has never been lack of ability to learn but a very shaky reasoning process. I hope it's just local parts …

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Re: Something went poof, need ideas for troubleshooting!

Posted on 2021-07-04, 15:08

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I turned it on inside the case. Before installing, I took a look at the underside, I was particularly interested in the standoff - they were all off the grid, from what I could tell. I don't think it was a short from the back.

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Re: Something went poof, need ideas for troubleshooting!

Posted on 2021-07-04, 15:06

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

As for the CPU fan, I asked about this... The red this time means 12v, the yellow is some "7v speed control" or something... Which can be ignored and connected to GND... Unless I have been given the wrong advice and grounding that yellow wire was wrong...

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Re: Something went poof, need ideas for troubleshooting!

Posted on 2021-07-04, 15:01

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well... If I must admit... The case I had only had 3 holes for standoffs, 2 near the IO shield and one in the center... I drilled and tapped the case for extra standoffs on the other side... One idea I had was to use that hole the horizontal 3-legged-thingy (rightmost on the picture, labelled 9636 …

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Re: Something went poof, need ideas for troubleshooting!

Posted on 2021-07-04, 13:51

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

P55T2P4 (AT) (untested... But from shop with warranty) with Matrox Millenium (untested...) K6-2 400 (untested) 64MB EDO RAM 70ns (Untested) VGA (LCD) screen was tested though... Power supply is a converted ATX bought from a shop, brand new - maybe they messed up the conversion? Meanwhile, I will …

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Something went poof, need ideas for troubleshooting!

Posted on 2021-07-04, 13:47

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Finally had the time to finish my first retro-build. Turned it on, nothing was on screen... As I was scratching my head, noticed a smell I didn't like. Had a quick look and carefully touched these 3 little heatsinks in the picture... They were very hot, very fast! Was going to shut it down... Right …

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Re: [repair advice] p55t2p4 rev 3.0 with damaged SMD component

Posted on 2021-07-03, 22:03

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I mean the weird thing is that the first time I measured it, it was 150nf. But 10 measurements after that, all showed 130nf... Maybe it was the heat from desoldering... On the other hand, 130nf doesn't sound like a standard size... Oh well!

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Re: [repair advice] p55t2p4 rev 3.0 with damaged SMD component

Posted on 2021-07-03, 22:00

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I took the good one off, from the other IC. According to my tester, it's 130nf. Unfortunately, in my little baggy of SMDs, there are not a lot of caps... 47 and 300 somthing... And I'd rather not build some network to get an equivalent :) Can barely see how to solder the good one back! :D I am going …

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Re: [repair advice] p55t2p4 rev 3.0 with damaged SMD component

Posted on 2021-07-03, 19:07

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

yeah - you make sense! I did try to look around the other chip but the "shape" of how things are laid out is different and I gave up... However, screw the layout! Look at the actual pins! I am thinking to remove the SMD that looks good on the other chip and measure that... Do you suppose these can …

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Re: [repair advice] p55t2p4 rev 3.0 with damaged SMD component

Posted on 2021-07-03, 18:32

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maybe through the chip implementation standard (but I've not been able to find that documentation): UMC UM61 3233F-7 9628SE B6501

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[repair advice] p55t2p4 rev 3.0 with damaged SMD component

Posted on 2021-07-03, 18:26

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I got for free a p55t2p4 rev 3.0 (a replacement under warranty to another board I might have actually fixed). While inspecting the board before installation, I noticed it has what appears to be a blown or smashed resistor (or other SMD "secret" part). It's near the L2 Cache chips: https://drive. …

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Re: Are K6-iii chips obtainable?

Posted on 2021-07-02, 12:46

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

nah, that's OK. I know I have more money then sense (the key to understanding this phrase is that I am talking in relative terms, not absolute! ;) ) I have a feeling the amount of time between "releases" is greatly reducing. I saw the same board, same revision, for £250. I had a go at continental …

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Re: Are K6-iii chips obtainable?

Posted on 2021-07-02, 11:38

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I project that SS7 motherboards are very soon going to beat the K3 CPU's in terms of rarity... I got me a KIII+ 550ACR (well, still in the mail)... Not as good a deal as debs3759! But I reckon still a reasonable price and room to sell with something left over... But motherboards are tricky. I paid …

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Re: 8k

Posted on 2021-07-01, 15:33

by

by DraxDomax

in Milliways

in Milliways

This could come handy in Red Alert, with the grenade glitch (when you click a target to attack with the grenadier, if you manage to click another target while he's pulling the pin, there is no range limit)

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Re: 8k

Posted on 2021-07-01, 13:16

by

by DraxDomax

in Milliways

in Milliways

My partner bought for my birthday a Samsung QE75Q950TS (75" 8k QLED)... I thought it was too much and asked her to return it and just buy me Sony MX4 headphones (which I also thought was a bit much). We don't have a "TV", we just watch movies and, very rarely, play games on our perfectly adequate 49 …

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Re: I was there, I saw the last AWE 64 Gold disappear and become an investment product...

Posted on 2021-06-28, 20:20

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

the situation in the UK is not that merry :) People either throw away what they don't need or they know what it's worth. I think it's a combination of our tiny houses and tradition in antiques. It is always annoying to see the same stuff in the USA sell for half the price... But shipping and customs …

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Help with P55T2P4 interface headers cluster

Posted on 2021-06-26, 21:47

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I know some of this info is available but I am still stuck. Trying to get together this P55T2P4 rev 3.10 and I am looking at the Asus manual and google and can't sort myself out regarding a few things: 1. The MB CPU fan headers are "GND +12 GND" but my fan is black-red-yellow - If I recall correctly …

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Re: Lol, anything out there that doesn't require an HDD?

Posted on 2021-06-26, 21:12

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, in my defence, I don't recall loading the CD drivers into RAM for every boot up... Like, they were designed to install into a hard disk and be brought into life by *something* (which I thought was my OS) Sorry to "confuse" you and make you feel that you need to emphasise how stupid I am... …

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Re: Lol, anything out there that doesn't require an HDD?

Posted on 2021-06-26, 20:36

by

by DraxDomax

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

64mb edo

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