pshipkov wrote on 2026-06-01, 07:19:So, what’s in the garage if the bike is parked in the living room? : )
A BMW Z3 3.0 and an Audi TT MKII 2.0 TFSI S Line Quattro S Tronic Coupé.
Trashbytes wrote on 2026-06-01, 07:30:maxtherabbit wrote on 2026-05-31, 13:34:very nice work and attention to detail
normally I'm extremely hostile to power supply guts swaps, but it seems you actually did a good job with that too
With this system I can understand the swap ..I too would be very cautious about using a unproven or even a proven AT PSU with such rare parts, at least this way the PSU internals are new.
Hence It's always important to test the voltages before you do anything!
A CHALLENGER HAS APPEARED!
the price is out of this world, but i wouldn't even sell my setup for anything less.
Thats probably the first slot-1 board I've seen in the wild since I got mine.
I feel bad for saying it, but the seller should have found a yellow/gold wave table card. ^.^
Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them. - Reverend Mother Gaius Helen Mohiam
Trashbytes wrote on 2026-06-01, 07:30:maxtherabbit wrote on 2026-05-31, 13:34:very nice work and attention to detail
normally I'm extremely hostile to power supply guts swaps, but it seems you actually did a good job with that too
With this system I can understand the swap ..I too would be very cautious about using a unproven or even a proven AT PSU with such rare parts, at least this way the PSU internals are new.
new != better
In power supply terms, new is almost always better. Provided you aren't buying CHEAP new stuff.
The OVP/OCP on new supplies is light-years ahead of anything that was available "period correct". To say nothing of efficiency and voltage regulation.
Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them. - Reverend Mother Gaius Helen Mohiam
luckybob wrote on 2026-06-01, 13:26:A CHALLENGER HAS APPEARED! […]
A CHALLENGER HAS APPEARED!
the price is out of this world, but i wouldn't even sell my setup for anything less.
Thats probably the first slot-1 board I've seen in the wild since I got mine.
I feel bad for saying it, but the seller should have found a yellow/gold wave table card. ^.^
I came across this one today too! 😀
Back around 1997 I used a HP Vectra mini tower computer with a single Pentium pro CPU.
I don’t think it was the 200mhz version but maybe 166mhz.
Anyways I think it had a matrox video card, 3com network card, HP dat tape drive
32mb ram, 2gb scsi hard drive. CDROM,
Adaptec scsi controller.
It ran Windows NT 3.5.1
Office 97
Lotus office
Netscape
Outlook email
It was pretty reliable. I only remember it crashing a few times with blue screen
Probably crashing to many times as by today’s standards .
But it worked for Me.
I used it for office productivity apps and printing large pdf documents mostly.
And Microsoft access database.
maxtherabbit wrote on 2026-06-01, 14:11:Trashbytes wrote on 2026-06-01, 07:30:maxtherabbit wrote on 2026-05-31, 13:34:very nice work and attention to detail
normally I'm extremely hostile to power supply guts swaps, but it seems you actually did a good job with that too
With this system I can understand the swap ..I too would be very cautious about using a unproven or even a proven AT PSU with such rare parts, at least this way the PSU internals are new.
new != better
No it doesn't but I'm going to assume OP has a good understanding of how to test the new internals to verify they are mint and good to use, now one could make the claim that an old AT PSU can also be verified but I pose that the PSU even if its within tolerance is now over 20 years old and is far more prone to dying and taking valuable components with it.
Personally I buy new AT PSUs from a trusted brand to use in my builds, even if I need to use a ATX to AT convertor, 20 year old AT PSUs are one of the few things I do not trust with rare part builds even if they are tested within tolerances and have correct voltages.
The parts are vintage and hard to replace so why take the risk even if its a small one.
Trashbytes wrote on 2026-06-01, 22:43:No it doesn't but I'm going to assume OP has a good understanding of how to test the new internals to verify they are mint and g […]
maxtherabbit wrote on 2026-06-01, 14:11:Trashbytes wrote on 2026-06-01, 07:30:With this system I can understand the swap ..I too would be very cautious about using a unproven or even a proven AT PSU with such rare parts, at least this way the PSU internals are new.
new != better
No it doesn't but I'm going to assume OP has a good understanding of how to test the new internals to verify they are mint and good to use, now one could make the claim that an old AT PSU can also be verified but I pose that the PSU even if its within tolerance is now over 20 years old and is far more prone to dying and taking valuable components with it.
Personally I buy new AT PSUs from a trusted brand to use in my builds, even if I need to use a ATX to AT convertor, 20 year old AT PSUs are one of the few things I do not trust with rare part builds even if they are tested within tolerances and have correct voltages.
The parts are vintage and hard to replace so why take the risk even if its a small one.
The new internals are from a brand new MSI MAG A650BN 650W NON MODULAR Power Supply.
luckybob wrote on 2026-06-01, 13:26:A CHALLENGER HAS APPEARED! […]
A CHALLENGER HAS APPEARED!
the price is out of this world, but i wouldn't even sell my setup for anything less.
Thats probably the first slot-1 board I've seen in the wild since I got mine.
I feel bad for saying it, but the seller should have found a yellow/gold wave table card. ^.^
Dang! I need to win some kind of lottery now!
If it's dual it's kind of cool ... 😎
--- GA586DX --- P2B-DS --- BP6 ---
Please use the "quote" option if asking questions to what I write - it will really up the chances of me noticing 😀
IT LIVES!!! 😎
For the life of me, I couldn’t get the fancy SCSI card not to have an IRQ conflict with the graphics card, so the system’s been reduced to this for now!
The Dynamic Pictures Oxygen 202 seems to assume the IRQ of whatever card is adjacent to it!!! I moved it around and found this!? So hopefully the IRQ can be sorted out properly when I get another graphics card to work in the machine.
Here’s how it currently looks:
This is as far as I can go for now, as I currently have no spare drives to use in it. I’m extremely happy that it’s booting to BIOS.
The next thing I will do when the time comes is a BIOS update!
This is the era of hardware irq lines on the pci bus. Have you tried to swap around the scsi/vga card? Its one of those things you dont know to try unless you've been there.
Once men turned their thinking over to machines in the hope that this would set them free. But that only permitted other men with machines to enslave them. - Reverend Mother Gaius Helen Mohiam
Yeah maybe a "Not all PCI slots can use all IRQs" issue. So can move to a different PCI to give it different ones to choose from.
Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.
luckybob wrote on 2026-06-02, 14:16:This is the era of hardware irq lines on the pci bus. Have you tried to swap around the scsi/vga card? Its one of those things you dont know to try unless you've been there.
I did, to no effect.
When I placed it in the second slot it then had an IRQ conflict with the network card (Assumed the same IRQ that the network card was already using.)
Pull the NIC, boot it, save that to the ESCD.... then put the NIC back in a different slot. It's maybe a bit bossy in master mode or something.
Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.
What are the symptoms of a motherboard needing to be re capped? (The caps do look old, as they're original form the year 1995!)
All of the cards are now securely screwed into place, so there’s little to no movement in the slots, and the system sometimes boots and sometimes doesn’t, without me changing anything. It’s currently like a one armed bandit and the jackpot’s a boot.
It has done this in the past, and I always thought that it was due to the CPU card not being aligned correctly in its slot, but this is clearly not the case!
I've tried all kinds of things, but one thing that's for sure is that it's random, and gets worse the more times you cycle the machine.
I'm absolutely going to have to get to the bottom of this problem before I move any further with this build!
Here is the boot sequence, indicating that everything’s being detected as it should when it does decide to boot:
It's absolutely worth re capping this thing, but it's going to be a while as I'm going to have to purchase my JBC Rework Station before I do, and they're extremely expensive!!! I only plan on purchasing it in about February next year as I've been putting it off in order to purchase more computers!!!! Self defeating I know!!! (No more computers for me!)
None of them are leaking, but I'm sure that some of them have dried out, especially the ones placed right up against the heatsinks for the VRM's on the CPU card!
Once I get the rework station, my hobby will change over to refurbishing rather than straight collecting.
PCI is designed to allow IRQ sharing. It's not a conflict per se, it will function fine but can reduce performance if both devices are generating a lot of interrupts
maxtherabbit wrote on 2026-06-02, 19:48:PCI is designed to allow IRQ sharing. It's not a conflict per se, it will function fine but can reduce performance if both devices are generating a lot of interrupts
Thanks for the info, I appreciate it! 😀
When the dual Pentium Pro fails to boot, absolutely nothing seems to happen when I Power it on except the fans run and the LED on the SCSI card illuminates. I need one of these diagnostic tools to see what’s happening during the POST, to see where it's getting stuck.
I still think that the issue's due to bad caps and will definitely re cap the motherboard and CPU card before going any further, but it will be interesting to see what this card can show me. (Just as a matter of fact the JBC rework station is $6380 without shipping and taxes, hence this is going to take some time!!!)
It could be failing caps, lifting pins on the 440FX chipset due to thermal shock or BIT Rot in the BIOS chip.
