Re: Abit KT7A (KT133A/VIA686B), Athlon XP Mobile 2500+

Posted on 2024-04-03, 13:23

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by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

The main issue is to find a PSU with a strong 5V rail (at least 25A), old ones have capacitor issues, new ones are weak on the 5V rail. If anyone has recommendations on this, let us know :-) I recommend 2 different PSUs that have 24-25A on 5V rail, if that's the minimum you require. They are …

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Re: CRT “crack” sound + picture flicker

Posted on 2024-04-03, 09:29

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by Windows98_guy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I may be a little late on this, since i fixed the problem some time ago, but I will post my results anyways in case somebody else has this problem in the future. So I decided to deep clean the inside of the CRT, even under the anode, and...the problem was fixed. There are no more crack sounds or …

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Re: Abit KT7A (KT133A/VIA686B), Athlon XP Mobile 2500+

Posted on 2023-11-20, 10:20

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by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

It has been some time since I recapped the Kinetiz 7E, so my memories are becoming somewhat hazy of it, and I did not find notes about it now that I checked. I believe it has a linear regulator for RAM / Chipset voltage, so there is nothing to adjust there, and most linear regulators are quite …

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Re: Abit KT7A (KT133A/VIA686B), Athlon XP Mobile 2500+

Posted on 2023-11-19, 09:53

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by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

It has to be checked from the controller IC datasheets. Some newer regulator ICs have smarter methods of determining required switching adjustments and the use of the external compensation loop is not even required. As an example, in the KT7A, the CPU regulator is more tolerable to using very low …

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Re: Abit KT7A (KT133A/VIA686B), Athlon XP Mobile 2500+

Posted on 2023-11-16, 10:11

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by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

I'll have to see if I dare to post how I determined everything when I did the recapping, as I do not actually want anyone to follow in my footsteps with this. Probably better that I just won't do it... Knowledge just increases the pain of the process, as then there is no option to be just satisfied …

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Re: CRT “crack” sound + picture flicker

Posted on 2023-09-11, 09:21

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by Windows98_guy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You may be lucky and there is a replacement available somewhere, although I have found it is near impossible to find ones for random computer monitors. Every machine has their own unique transformer in them pretty much, you cannot just take any random one although if you really are desperate and …

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Re: CRT “crack” sound + picture flicker

Posted on 2023-09-05, 18:47

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by Windows98_guy

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hate to say it, but everytime I get that zap/crack sound and the display cuts out when you hear it, that is the flyback transformer. Something about the winding's break down and short or arc. I have only changed about 4 myself, and everytime I do I sweat bullets due to all the horror stories I here …

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Re: Geforce FX 5200 upgrade?

Posted on 2023-08-09, 07:45

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by Windows98_guy

in Marvin \ Video

in Marvin \ Video

Hey, which driver version did you use for the Geforce FX 5200 on Win98? I literally used the exact same motherboard and gpu, but have some weird instability issues with it. Try the 45.23 version, works fine with my FX 5200 on Win 98 SE. Of course my hardware is otherwise different. --- In defense …

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Re: Geforce FX 5200 upgrade?

Posted on 2023-07-27, 12:04

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by Windows98_guy

in Marvin \ Video

in Marvin \ Video

Hello, I was given an old computer with the following parameters: AsRock P4i65G Pentium 4 3Ghz / 1MB Ram: 2x512MB Video: Geforce FX 5200 128MB Monitor: Benq LCD 1280x1024 I decided to install win98 and XP on it for retro games until around 2005-2006. Everything is fine and I like it a lot, I just …

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Re: Tiny Vortex86-based DOS gaming PC - weeCee

Posted on 2023-07-26, 20:04

by

by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

@Windows98_guy Can you keep your hand on the processor? I also thought DX1 had a high temperature but believe me DX3 is much worse. Yes, but I didn't touch it for more than a few seconds. It's just that at first after a few minutes, it was only mildly warm, but after an hour or so it was as hot as …

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Re: Tiny Vortex86-based DOS gaming PC - weeCee

Posted on 2023-07-18, 11:11

by

by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

Yes. The number is: "200-FTSH13802FDV ". (The manufacturer number is: "FTSH-138-02-F-DV"). There are some other connectors available as well, but these are the only ones that at least have factory stock available. Yeah that looks right. Expensive though! I just wanna confirm that these Mouser …

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Re: Tiny Vortex86-based DOS gaming PC - weeCee

Posted on 2023-06-26, 17:24

by

by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

I'm thinking of soldering another board, since I got 5 pcbs from PCBWay. But I do have one problem - I don't have anymore of the processor module's mounting connectors. Now the connectors you need are "PH2*38(1.27)-5.3mm", but I was wondering if somebody has tried to use other but similiar mounting …

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Re: Tiny Vortex86-based DOS gaming PC - weeCee

Posted on 2023-06-23, 12:22

by

by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

I'm thinking of soldering another board, since I got 5 pcbs from PCBWay. But I do have one problem - I don't have anymore of the processor module's mounting connectors. Now the connectors you need are "PH2*38(1.27)-5.3mm", but I was wondering if somebody has tried to use other but similiar mounting …

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Re: Tiny Vortex86-based DOS gaming PC - weeCee

Posted on 2023-06-11, 10:30

by

by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

I've found the problem. Some of the connectors for the processor module itself were not properly soldered. I didn't notice at all. I guess my soldering iron did not have enough solder on the tip, because I used less solder on it for the sound chip or I just went too fast and it didn't stick well on …

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Re: Tiny Vortex86-based DOS gaming PC - weeCee

Posted on 2023-06-06, 18:46

by

by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

So use CS4237B-KQ instead of CS4237B-JQ. Do not use 24LC04BT/SN EEPROM... I'm having a problem with it and it says on flash that it has insufficient memory (4kB is probably not enough). Before that 24LC16B/SN was used. What do you want to help with at WeeCee? Ok, so I checked the sound chip - it is …

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Re: Tiny Vortex86-based DOS gaming PC - weeCee

Posted on 2023-06-06, 12:56

by

by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

Can someone please confirm the list of parts for the WeeCee board revision 0.3 (the original from Rasteri that you can get from PCBWay)? I like to confirm i have all the correct parts before moving on with troubleshooting my WeeCee. I've attached the picture of the parts lists i downloaded from …

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Re: Tiny Vortex86-based DOS gaming PC - weeCee

Posted on 2023-06-03, 09:15

by

by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

Can someone please confirm the list of parts for the WeeCee board revision 0.3 (the original from Rasteri that you can get from PCBWay)? I like to confirm i have all the correct parts before moving on with troubleshooting my WeeCee. I've attached the picture of the parts lists i downloaded from …

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Re: dISAppointment - LPC to ISA adapter - ISA on modern motherboards

Posted on 2023-04-19, 08:17

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by Windows98_guy

in Release Announcements

in Release Announcements

Hi I have an ASRock h61m/u3s3 motherboard that does have a TPM1 connector, but it needs to be soldered on the board. However the problem is that the manual doesn't mention having a TPM and as a result i don't know the pinout. Any ideas where i can get information on the pinout of this motherboard?

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Re: Abit KT7A (KT133A/VIA686B), Athlon XP Mobile 2500+

Posted on 2022-11-26, 18:25

by

by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

I did some more experimenting with KT133 (DFI AK74-EC Rev. B2), with a Bios Patcher patched BIOS. I managed to get an Athlon XP Thoroughbred-A to work by modifying the L3 bridges on the CPU. It seems that some KT133 boards are picky about the extra bit added to L3 bridges in newer than Palomino …

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Re: Abit KT7A (KT133A/VIA686B), Athlon XP Mobile 2500+

Posted on 2022-10-29, 17:56

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by Windows98_guy

in Marvin \ System Specs

in Marvin \ System Specs

A bit more off-topic discussion: I just dug out my DFI AK74-EC Rev. B2 (KT133) motherboard, and did a couple of quick tests with it just for fun. Athlon XP 2500+ Thorton (basically same as Barton with half the cache), did not boot at 1.8 or 1.4 GHz (100 MHz base clock & pinmod). Athlon XP 2100+ …

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