Re: Switching regulator module as replacement for hot linear regulators (mainly used on PCI VGA cards)
Posted on Yesterday, 09:59
PM sent.
Re: Switching regulator module as replacement for hot linear regulators (mainly used on PCI VGA cards)
Posted on 2025-05-08, 08:04
Very nice job. That looks amazing! :-) I added your project to the vrm projects thread. :-) https://www.vogons.org/viewtopic.php?f=46&t=86611&p=1132549#p1132549 Didn't know there was one. Thanks! :D I have an aversion against switching components, mildly said. I rather prefer calm, less efficient …
Re: Switching regulator module as replacement for hot linear regulators (mainly used on PCI VGA cards)
Posted on 2025-05-08, 08:03
So here's the BOM: 1x Murata OKL-T/6-W5P-C https://eu.mouser.com/ProductDetail/Murata-Power-Solutions/OKL-T-6-W5P-C?qs=CxV9Ey7RZVdyoXgyGEeAuw%3D%3D 2x C 0805/10u/10V/X5R or X7R https://eu.mouser.com/c/passive-components/capacitors/ceramic-capacitors/mlccs-multilayer-ceramic-capacitors/multilayer- …
Re: Switching regulator module as replacement for hot linear regulators (mainly used on PCI VGA cards)
Posted on 2025-05-07, 17:58
Hi, shortly I had made a post about a switching regulator module I once made for my PCI Riva TNT card to replace the very hot linear one. You can find it here: https://www.vogons.org/viewtopic.php?p=1131833#p1131833 Main intention was to reduce the cards temperature due to heating by the regulator …
Re: Bought these (retro) hardware today
Posted on 2025-05-06, 12:00
I'm very curious about this. What part did you use to replace that ridiculously hot regulator? I know several Voodoo cards from this time period have similar issues with heat dissipation and regulators that run at least as hot as the graphics chip itself. So here are some pictures of the card. Riva …
Re: Questions concerning BIOS programmers
Posted on 2025-04-08, 06:19
There is, but it will be far more expensive than one of those CH341A based serial EEPROM programmers. My recommendation if you want to be ready for almost any programmable IC would be one of the larger XGecu T48 programmer + adapters kits . The difference between the kits is the number/types of …
Re: What retro activity did you get up to today?
Posted on 2025-03-26, 07:24
We should admit this "hint" was maybe a bit too much between the lines. Image a license plate "B-CU 911" (that's a German style one) ... on a BMW. May need some seconds to get the idea (for a native German speaker) ;) The closest I get is it's baysay oo, which is something like the root of own/ …
Re: What retro activity did you get up to today?
Posted on 2025-03-25, 12:58
We should admit this "hint" was maybe a bit too much between the lines. Image a license plate "B-CU 911" (that's a German style one) ... on a BMW. May need some seconds to get the idea (for a native German speaker) 😉
Re: What retro activity did you get up to today?
Posted on 2025-02-27, 10:14
I realigned the heads on a floppy drive... ONCE, and it was a nightmare. I didn't know how to hook up a scope to the drive and was blindly moving the top head ever so slightly in different directions and validating it with a Compaq diagnostics tool. This took hours and I almost gave up multiple …
Re: What retro activity did you get up to today?
Posted on 2025-02-19, 07:38
edit: aww heck yeah. Went through my box of spare microcontrollers like atmels and pics and the attiny2313a was the best option to hand. Requires no extra circuitry to run the crystal (PICs do) and has a ckout pin, kind of a cruel fate but it's got no code and just has the fuse bits set to use an …
Re: Are X700 Radeons prone to die?
Posted on 2025-02-17, 16:07
I recently got an x800 for super cheap ($1) without a cooler... but all hopes of it working are out the window now, as it has a cracked RAM BGA chip. I'd take a shorted MOSFET card any day over cracked RAM / card that needs RAM replacement. I have a dead X800 GTO here. With cooler and eight RAM …
Re: Are X700 Radeons prone to die?
Posted on 2025-02-17, 16:03
In regards to the "erroneous" Vddq memory voltage: if this is how the video card was designed / set up originally, then there was probably a reason for it. Yeah, but still very questionable to me. Most likely, the card just died... especially if it has one of those Realto AGP-PCIe bridge chips - …
Re: Bought these (retro) hardware today
Posted on 2025-02-17, 14:04
Does this eSupport-BIOS have some benefits over the regular 4.51?
Re: Are X700 Radeons prone to die?
Posted on 2025-01-31, 16:40
I have tested some of my other Radeon cards, (9550, 9600Pro) and on all of them Vddc is equal Vddq. Sometimes both rails are even bridged which seems a valid option according to some schematics. I've also removed the two voltage setting resistors from the X700 and as suspected one is 910 ohms and …
Re: Unreal 1 - What is your opinion about it?
Posted on 2025-01-30, 13:35
Unreal's main "feature" was the graphics in combination with the high time of Glide. Besides that I don't remember very much from my first play through which wasn't even on 3dfx hardware. Half Life on the other hand was the complete opposite. While not beeing as sophisticated as Unreal technically …
Re: Are X700 Radeons prone to die?
Posted on 2025-01-30, 10:59
It's a ASUS P5VDC-MX. Real AGP (8x) and crippled PCIe. A Ti4200 (AGP 4x) and a Radeon 9600Pro (AGP 8x) do work without issues. For reference: the X700 does also not post in ASRock P4i65G and ECS K7SEM.
Are X700 Radeons prone to die?
Posted on 2025-01-30, 09:55
So I have this Radeon X700 card: X700.jpg I bought this card some weeks ago. At first boot the system wouldn't boot, the second and later tries it did but it always took about 4-5 seconds before the display showed a picture. I could install drivers in Windows 98 SE and run several rounds of 3DMark ( …
Re: Geforce 4 ti 4200 upgrade
Posted on 2025-01-30, 06:44
What is your old RAM? Can you post a pic? Here's the pic. Do I need to change anything on the board of the GF4 Ti 4200 if I change to a different brand of memory such as the one listed a couple of post above? (I've seen YouTubers change straps for new RTX cards when they change the brand of memory …
Re: Geforce 4 ti 4200 upgrade
Posted on 2025-01-29, 08:26
What is your old RAM? Can you post a pic?
Re: Switching regulator module as replacement for hot linear regulators (mainly used on PCI VGA cards)
Posted on 2025-01-27, 13:38
Hmm, something happened to my reply from last Friday ... I'll try to replicate ... I get now why the PCI cards tend to have the ridiculously hot running 3.3v regulators. The card is relying on the 5v supply from the PCI slot and using the regulator to drop it down to 3.3v, so there is a lot of waste …
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