Re: Types of capacitors to recap computer stuff (motherboard and PSU)

Posted on Yesterday, 17:35

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My applications: is to rebuild PSUs: this will be compaq proprietary PSUs to safeguard against blowing up, and one of my generic baby AT PSU. I also ordered 2 Astec baby AT PSUs and they tend to be well built. And as usual pentium III motherboards and socket 462 boards. Also small capacitors (under …

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Re: CDROM not recognized in DOS after a SOFT reset but works fine after a HARD POWER OFF reset. Any ideas?

Posted on Yesterday, 16:11

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Good! Cheers,

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Re: CDROM not recognized in DOS after a SOFT reset but works fine after a HARD POWER OFF reset. Any ideas?

Posted on 2020-08-02, 21:27

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok that implies the optical drive is not standardized on ATA standard and fails on warm reset. Try another different optical drive instead. Otherwise, controller card? Cheers,

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Re: Types of capacitors to recap computer stuff (motherboard and PSU)

Posted on 2020-08-02, 21:25

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It was identified as genuine and had photos of these and seller seemed knowledgeable, and behaved like seller was in repair business and when I received them was not good one. Then I knew why. I have seen this happen due to people not knowledgeable in other words, didn't research and did not vetted …

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Re: Types of capacitors to recap computer stuff (motherboard and PSU)

Posted on 2020-08-02, 18:56

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Main issue is discussion is going wide and large and this is really grand. Yes, I studied electronics, researched capacitors and was member of a badcaps once. But this forum fell apart and full of spams. And incidentally I liked to get bulk purchases at good price of Samxon but they are no longer …

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Re: CDROM not recognized in DOS after a SOFT reset but works fine after a HARD POWER OFF reset. Any ideas?

Posted on 2020-08-02, 18:43

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That's correct, you need to diagnose the reset signal is not asserted issue on your computer. Turn off and on is equivalent of brute forcing the reset line. This is what power supply power good signal does to the reset circuit as well. Unplug the optical drive and test with hard drive only. If works …

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Re: Master/Slave IDE problem on 386DX with Vitex I/O card and Conner CFS425A HDD

Posted on 2020-08-02, 18:27

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is the reason I avoid Conner. We had trouble with these back in the day too. Get another hard drive that are not Conner. Last try is set both drive as drive select and modify the cable (one wire is cut), details don't remember. Providing that both drives supports CS jumper. Sorry. Cheers,

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Re: S3 Vision864 vs 964 Vesa Local Bus VLB

Posted on 2020-08-01, 21:46

by

by pentiumspeed

in Marvin \ Video

in Marvin \ Video

864 is based on DRAM FPM memory and supports EGA, CGA while 964 does not and uses VRAM. Cheers,

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Re: CDROM not recognized in DOS after a SOFT reset but works fine after a HARD POWER OFF reset. Any ideas?

Posted on 2020-08-01, 21:45

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

IDE/PATA, ATA has reset line as well. This means it is not asserted properly. Cable, controller card please try them. Cheers,

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Re: Compaq Deskpro M and XL models.

Posted on 2020-07-31, 20:11

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Really need flux paste. Get Amtech 559 flux from good seller and very strong solder vacuum tool. Make sure your tip is little broad on your soldering tool and of course lead solder 63/37. Bought these from this seller and these is genuine flux. Do not buy from chinese. https://www.ebay.ca/itm/AMTECH …

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Re: Sony Vaio P4 3.06GHz + Voodoo 3 3000 + Matrox m3D + SB Live!

Posted on 2020-07-30, 21:57

by

by pentiumspeed

in Marvin \ System Specs

in Marvin \ System Specs

That is mold flow, not heat. I see this often on some certain parts that shows the plastic flow during molten plastic injection into molds during manufacture. Cheers,

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Re: Optiplex GX280 Help

Posted on 2020-07-30, 21:47

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Very good memory modules. Get a GX280 motherboard then. If you need to change power supply, it is standard ATX design. Oh, remember this was from bad caps period with yours. Later ones and the ones on ebay motherboards are already replaced back then and if they say working, should be better success …

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Re: PCI Graphics Roundup - DOS

Posted on 2020-07-30, 21:38

by

by pentiumspeed

in Marvin \ Video

in Marvin \ Video

What is the reason for Quake running on PIII 933 to produce less FPS even at 640x480? What is best way to get Quake to have better frame rate, not the hard ware listed here for "PCI graphics round up - dos"? Cheers,

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Re: How does the Pentium Overdrive 83 work?

Posted on 2020-07-30, 19:56

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Price drove the least common of ODP 83. People were hanging on 486 and few went to pentium machines but EDO and BEDO memory was so pricey then. Paid 700 cdn for pair of 8MB BEDO ram when I got FX version of Asus motherboard with Pentium 100. I had that in 96 if I remember correctly. Cheers,

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Re: Optiplex GX280 Help

Posted on 2020-07-30, 19:44

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not junk. GX280 motherboards on ebay is not that expensive. This is how I built Optiplex 780 this way to save on money back then. I insist on seeing pictures of your memory removed from your computer. Bad quality ram does this too. Cheers,

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Re: Bought these (retro) hardware today

Posted on 2020-07-30, 19:41

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The fan under the cards, don't use fan there. Just vents. Use 80mm or 90mm fan blowing out, the 140mm at top, also blows out. Less noise too. Anything else conflicts. Honestly, this case is worst design for cooling unless you have side vents on the panel, if not, draw up one and use 2 sizes of …

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Re: Optiplex GX280 Help

Posted on 2020-07-30, 17:23

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Applied thermal paste after cleaned the old paste off both heatsink and CPU? Did you put in memory in the dell computer? I'm familiar with Dell desk top computers when I was playing with them that was cast off while ago. Cheers,

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Re: Modifying the POD83's voltage regulator for overclocking

Posted on 2020-07-30, 00:38

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Average diode voltage drop is .6 to .7 with current about 20% margin under upper current limit for reliability and commonly not done this way except current flow through was below 100mA or less due to cost. If you are seeing greater than that, the diode will break down quickly, for reliability you …

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Re: SCSI Hard Drive cannot be read or written to when Adaptec Driver is Loaded

Posted on 2020-07-29, 21:51

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That means 4 terminations for that. 50 and 68 are on separate buses unless that card is done in such way via one chipset which might be issues. Or trying to share both buses on one chipset which could be another issue. Best way is find a scsi controller that has 1 chipset per bus or run two …

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Re: Pentium M Build Log

Posted on 2020-07-29, 19:13

by

by pentiumspeed

in Marvin \ System Specs

in Marvin \ System Specs

Oddly the cost of Asus CT-479 kit is not that expensive back in the day but funny thing people wasn't thinking of using much better pentium-M but I think the fsb could be the reason that holds this back on overall performance?

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