Re: Voltage adjustment on Socket 3 V4p89SP3 board
Posted on 2020-11-23, 11:22
The best you can do is find a reference schematic for the LM431 IC. Finding a schematic for that motheboard is next to impossible.
Re: Soltek Motherboard Start, Post, then stop. Can you help me ?
Posted on 2020-11-22, 20:21
Yeah, absolutely. USB shielding is connected to GND.
Re: Soltek Motherboard Start, Post, then stop. Can you help me ?
Posted on 2020-11-22, 19:58
Yeah, I was thinking the same as quicknick, the board expects PWRBT# to be tied to GND in normal operation and only when you would normally push the power button it gets pulled to 5V. A pull-down resistor should do the trick. LED- may not be GND, make sure its tied to GND when the board is unplugged …
Re: Soltek Motherboard Start, Post, then stop. Can you help me ?
Posted on 2020-11-22, 15:14
Check the area near the front panel header, you might be lucky and find a shorted/damaged component there. From an electrical perspective, how is the PWR_ON header presenting ? Both pins shorted ? Here is a header from another s478 Soltek board, you should have one of the pins tied to 5V: Capture. …
Re: Soltek Motherboard Start, Post, then stop. Can you help me ?
Posted on 2020-11-22, 14:00
Yes, the board have the same behavior without the CPU. In fact, the board with nothing on it and just the 20 pins power connector is acting the same. Power on, then 3-4s latter, power off (No POST beep of course) Yeah, at this point it's either the board or the PSU that's bad. If you already …
Re: 5.25" Floppy drive support.
Posted on 2020-11-22, 13:52
Would anyone happen to know any socket 939 motherboard that would support dual floppy drives? I have a good socket 939 build and I could just switch the motherboard if I found such. I have a DFI Lanparty NF4 SLI-DR, which supports dual floppy drives. It also supports drive A & B swap. 20201122_ …
Re: Soltek Motherboard Start, Post, then stop. Can you help me ?
Posted on 2020-11-22, 12:27
Sounds like the southbridge is on its way out (the part responsible for handling power on/off to the PSU). Does it have the same behavior without a CPU ?
Re: VRM very low voltage with MMX CPU on i430VX board
Posted on 2020-11-22, 12:00
Don't know much about the history of the system, but fact that the jumper settings on the board didn't match up with the installed CPU doesn't look great :) The WinChip C6 supports 1 of the 2 voltage ranges : 3.52V (3.45V–3.6V) 3.3V (3.135V–3.6V Mine has 3.52 written on it so I guess it expects 3. …
Re: VRM very low voltage with MMX CPU on i430VX board
Posted on 2020-11-22, 11:05
I would suspect maybe the EZ1083CT is bad (from a previous OC or something like that) ? EDIT: Could also be bad capacitors on that rail.
Re: Any manual or guide for a ABit Motherboard (AB-PT5)?
Posted on 2020-11-21, 21:20
We have it here: http://www.win3x.org/uh19/motherboard/show/118
Re: Let's run Windows 98 on a really fast computer
Posted on 2020-11-21, 08:58
Have you tried an Ivy Bridge processor on a B75 board? I've had really good luck using Windows 98 with a Core i5-3570 on a Gigabyte GA-P75-D3. It has 4 native PCI slots as well as a couple of PCI-E x16 slots. It also boosts the CPU up to 3.8 GHz when using a single core. Unfortunately, my only Ivy …
Let's run Windows 98 on a really fast computer
Posted on 2020-11-20, 17:35
One evening, I was sitting on Youtube and I saw an interesting video from a guy named MattKC, which made a Windows 98 rig from unusually new parts: https://www.youtube.com/watch?v=7D01We2aAu8 He used an Asus P5PE-VM, C2D E6600 and a GeForce 6800, all of which are officially supported by Windows 98. …
Re: Need Help Figuring Out AMIBIOS Beeps
Posted on 2020-11-19, 09:01
Boards have different behavior when they come in contact with the 5V standby signal, some power on for a brief second, some don't at all.
Re: Socket A Motherboards That Have 12V-Centric VRMs?
Posted on 2020-11-18, 22:44
made a Vogonswiki page here: https://www.vogonswiki.com/index.php/List_of_ … _A_motherboards the_ultra_code wrote on 2020-11-18, 22:41: 😓 Work for another day. For now, I'll just list those that have a 12V connector, and maybe later, if free-time permits, I'll make a VOGONS wiki post like that. …
Re: Need Help Figuring Out AMIBIOS Beeps
Posted on 2020-11-18, 13:09
To me, it sounds like it boots, then complains about CMOS settings being reset to default (dead battery). I've had this sound combo happen on one of my P4 AMI boards. If you don't see anything on the screen, try a known good video card and monitor. Also try clearing the CMOS.
Re: Socket A Motherboards That Have 12V-Centric VRMs?
Posted on 2020-11-18, 12:27
I can list a few boards that I know have 12V rails (and I also own): Shuttle AK39N - KT400, uses molex connector for 12V distribution: https://www.shuttle.eu/_archive/older/en/ak39n.htm ECS N2U400 - nForce2, P4 connector: https://www.ecs.com.tw/ECSWebSite/Product/Product_Overview/EN/Motherboard/ …
Re: Slot-2 dimensions
Posted on 2020-11-16, 15:00
I think it would be easier to measure the CPU contact itself. You'll likely need to make a few test pieces to get the gap right anyways.
Re: The Ultimate Hardware 2019 (UH19) project- a stason.org/TH99 alternative
Posted on 2020-11-16, 08:12
One proposal for improvment (maybe I have not found this funtion so far)?: With TH99 I could browse all pictures of a given mainboard type: http://www.uncreativelabs.de/th99/m/m8088_i.htm This is also possible via google picture search: https://www.google.de/search?q=site%3Ahttp%3A%2F%2Fwww. …
Re: The Ultimate Hardware 2019 (UH19) project- a stason.org/TH99 alternative
Posted on 2020-11-15, 23:02
Time for another update! We've implemented a translation feature, which allows you to view UH19 in your desired language. index1.PNG p2b.PNG There is now a select field in the top bar, which will bring the language options when clicked. Once the selection is made, click "Go" and the page will update …
Re: Need Award or AMI Bios for Opti 82C895 PCI VLB Motherboard
Posted on 2020-11-15, 22:40
These boards are not the same as yours, but they use the same OPTi 82C895 chipset; the BIOS images may work on yours. Jetway board: http://www.win3x.org/uh19/motherboard/show/5505 QDI board: http://www.win3x.org/uh19/motherboard/show/5568 We have the Edom board in uh19 as well, I'll let you know if …
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