Re: Bought these (retro) hardware today

Posted on Today, 00:29

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought PS3 SCPH-3001A, awaiting the shipping. Need to order HDMI port, our supplier does not stock these. I do this HDMI replacements all the time at work on consoles including Xbox series and PS5. Cheers,

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Re: What do you drive?

Posted on Yesterday, 20:22

by

by pentiumspeed

in Milliways

in Milliways

Go farther out, like 3 hours away or more and borrow a friend's car instead or rent a car to check out used car for sale, if like, buy it and travel back again with a friend and friend drive the other car while you drive the car that you found. Yes, I know what Toronto is and I also live east of you …

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Re: Bought these (retro) hardware today

Posted on Yesterday, 18:00

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes to both. Can do MMX due to regulator. The 3.3V comes from ATX plug. This what my AN430TX did. Cheers,

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Re: What do you drive?

Posted on Yesterday, 16:32

by

by pentiumspeed

in Milliways

in Milliways

Chrysler or Toyota? Both are good makers. For us, (my family) drove three generations of Toyotas, first one was 1990 Tercel. Then next two was Corolla 2003 and 2021, both bought new. The 2003 was maintained twice a year and annual Krown applied and around 17 years, we gave it to one of our relative. …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-12-01, 23:01

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Have you confirmed that adapter's ground plane is not oscillating? For this, oscilloscope's ground clipped to the motherboard's ground and your probe on the adapter's ground plane? The processor's white noise is correct, but the voltage ripple is too much, all of this from linear regulator …

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Re: Troubleshooting odd Compaq i440Bx board

Posted on 2022-11-30, 21:05

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This board in particular was not reliable even at 350. I tried upgrading to 550MHz PIII, still crashing once in awhile back in the day when these COMPAQ pcs came out cheap on used market so I replaced Compaq with a core 2 duo, didn't recall but Asus board and in a generic case running XP. Stable and …

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Re: Best stable VIA chipset driver for ASUS P4V8X-X (PT800 chipset) on Win98SE?

Posted on 2022-11-30, 20:59

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

VDNKh wrote on 2022-11-30, 18:13: pentiumspeed wrote on 2022-11-29, 23:48: What about the K8T800? Cheers, Yes the bug is present there too. Downgrading the BIOS also fixes it. But the board is not Asus, this one I have is a Fujitsu Siemens motherboard with K8T800 chipset, does this still have this …

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Re: Building a WinXP PC

Posted on 2022-11-30, 00:00

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

cde wrote on 2022-11-29, 17:50: BTW avoid the G2 stepping, it has worse memory latency. This G2 stepping is Lima core, which is mostly all low end low power efficient Athlon 64 with "LE " "e" suffix? Cheers,

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Re: Best stable VIA chipset driver for ASUS P4V8X-X (PT800 chipset) on Win98SE?

Posted on 2022-11-29, 23:48

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

What about the K8T800? Cheers,

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Re: 230W PSU - keep it or kick it?

Posted on 2022-11-29, 23:28

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The rectifier diodes for input AC to DC array upper left, two small heatsinks, TO220 transistors for chopper, outputs are diode rectifier in TO220 package and two soldered together diodes on heatsink is not rated for 230W and pair of main capacitors is undersized. 100W or less is about right. If …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-11-29, 00:05

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This upgrade module circuit board is sub optimal due to too much concessions due to circuit board when designed especially linear regulator and not enough capacitors closer to the VCC and VDD pins. If the guy knew the requirements, would keep this in mind when doing rough layout of all the …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-11-28, 16:27

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Linear regulators do need ceramic MLCC or tantalum capacitors right at the in and output pins to prevent oscillation, not electrolytic. This says so in the in any linear regulator datasheets. And in another datasheet for processor, these do state must have low ESR type, either tantalum or ceramic …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-11-28, 00:53

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

He might had lighthearted about studying on EE. ESR, less is best since this allows least resistance to keep noise small due to able to supply high current spikes that processor imposes on the voltage rails. And paralleling many same capacitors goes around the impedance issue at high frequency ( …

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Re: Compaq 486/33m Manual

Posted on 2022-11-27, 22:31

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Remember, only part that is not obtainable is power supply board so if this dies, either repair the power supply or use 24 pin ATX power supply repinned to compaq pinout or use repinned 6 inch 24pin atx extension cable, just leave off power on (ground it to turn on), and 3.3V wires. This is a …

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Re: Philips Brilliance 15a - model 15a12ta

Posted on 2022-11-27, 18:31

by

by pentiumspeed

in Marvin \ Video

in Marvin \ Video

Yes, sync on green. Which means sync timing is inline between green video signal bursts. Not common in PC but common on specialized computers like SGI, Sun, etc. Cheers,

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-11-27, 18:20

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I like to use MLCC SMD capacitors, around 10uF to 22uF for this CPU, 6.3V voltage rating too for 386 and 486 class. Yet, the small SMD capacitors on the CPU package is minor role in your photo and is much later. The most of the ESR comes from capacitors on the that are pentium and later …

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Re: If you have a Compaq LTE series laptop with a broken floppy drive, check the belt!

Posted on 2022-11-27, 02:16

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes that one. I got two from this while ago. Cheers,

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Re: If you have a Compaq LTE series laptop with a broken floppy drive, check the belt!

Posted on 2022-11-27, 01:47

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Infamous W1D indeed. Yes, there a seller selling new belts for these on ebay. Cheers,

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2022-11-27, 01:11

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

CPU needs massively low resistance equivalence for CPU's voltage core . Much less capacitor's ESR so as voltage get less. Cheers,

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Re: Gpu advice needed for a WinXP build.

Posted on 2022-11-26, 22:06

by

by pentiumspeed

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

GT310 is really low end and will not offer much even on low details, go with GTS250, will let you have stuff on medium with 1280x1024. If 1080p, there will be loss of performance. Get a GTX 285 later on. I know this, as I had played with low end video card due to cost on PCs I had back in the day. …

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