Re: Diamond Monster 3D II Voodoo 2 repair help needed

Posted on 2022-12-16, 22:00

by

by lemonlime

in Marvin \ Video

in Marvin \ Video

Well, after doing a ton of probing, I think I may have found the issue! Big thanks to @maryoosh_k on twitter for the suggestion of checking all the RNs. One of the very last resistor networks I checked at the rear of the card appears to be bad! I measure >1M ohms across those two points in the below …

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Re: Diamond Monster 3D II Voodoo 2 repair help needed

Posted on 2022-12-16, 21:18

by

by lemonlime

in Marvin \ Video

in Marvin \ Video

There's a blue resistor on the left part of the card, between the dac and the middle 3dfx chip. It's probably not an original part but I don't know what it's for. I have bought a broken Creative 3dfx 2 with kind of similar errors, mine says TMU 0 Ram = 0 Mb and stops there, and the log gives a …

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Diamond Monster 3D II Voodoo 2 repair help needed

Posted on 2022-12-16, 18:31

by

by lemonlime

in Marvin \ Video

in Marvin \ Video

Hi All, I picked up this Diamond Monster 3D II (8MB Voodoo 2) a while back and it turned out to be defective. It was sold as-is untested for a good price, so not too surprising. The card is actually in beautiful condition and very clean. No missing SMD components, no trace damage or scratches and I …

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Re: Anyone own an Asus PCI/I-P54TP4 with pipeline burst SRAM? Planning to mod direct-mapped SRAM to pipelineburst

Posted on 2022-11-25, 15:28

by

by lemonlime

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Full Yes 82430I PCI Bus Main Board: https://theretroweb.com/motherboards/s/full-yes-intel-82430fx#downloads There's a guy on youtube with this board, https://www.youtube.com/watch?v=CEiSQsDI8dQ , but he is only installing the 512K asynchronous cache. He does point out the jumper to set to PB SRAM …

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Re: Unsual 90's Thin Client, customized AMD case!

Posted on 2022-09-19, 14:16

by

by lemonlime

in Marvin \ System Specs

in Marvin \ System Specs

Sorry to revive an inactive thread, but wanted to put this here in case anyone was looking to learn more about these Boundless TC systems. I did a video recently on turning my TC325 into a DOS gaming rig: https://youtu.be/rEsNgvNyFKw There is information there about the hardware components, how the …

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Re: 3dfx Voodoo 5 5500 memory replacement. Hyundai/Hynix SDRAM alternatives?

Posted on 2022-07-21, 20:08

by

by lemonlime

in Marvin \ Video

in Marvin \ Video

Instead of searching for old stock, I found a couple of possible options that are new: I found these ISSI chips on mouser that I believe may work. They come in -5 (200MHz) and -6 (166MHz) varieties. They appear to be 512Kx32x4banks and come in TSOPII-86. https://www.mouser.ca/datasheet/2/198/42- …

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RAM chips for a GeForce 4 Ti4200

Posted on 2022-07-21, 19:30

by

by lemonlime

in Marvin \ Video

in Marvin \ Video

Hi All, Working on my backlog of video cards requiring repair :) This one is an Albatron GeForce 4 Ti4200 (128MB 8X AGP model). I get artifacting in 2D/3D, but aside from that the card is stable. I replaced two broken off surface mount caps earlier, but that didn't do the trick. I'm assuming it's …

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3dfx Voodoo 5 5500 memory replacement. Hyundai/Hynix SDRAM alternatives?

Posted on 2022-07-21, 18:48

by

by lemonlime

in Marvin \ Video

in Marvin \ Video

Hi All, I bought an as-is Voodoo 5 5500 card recently. The previous owner wouldn't tell me much about its history, but I fully expected it to require repair. Some attempts were clearly made in the past. The card was absolutely COVERED in flux residue, and someone attempted to reflow some of the TSOP …

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Re: Number Nine Imagine 128 Series II problems. Bad memory possibly?

Posted on 2022-07-21, 15:00

by

by lemonlime

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Alright, I popped the VBIOS out of my "legacy-free" Imagine 128 Series II and read it out with a universal programmer. Let me know if you try this out on an older card and how it goes! :) Edit: For reference, my card's VBIOS part is a National Semiconductor NM27C256V. I think, in this package, it's …

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Re: Number Nine Imagine 128 Series II problems. Bad memory possibly?

Posted on 2022-07-19, 18:18

by

by lemonlime

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Good work! I've got one of the late 128 Series 2s without the Cirrus Logic chip so if the newer VBIOS isn't easy to find, I should be able to dump mine I've been searching for the newer VBIOS without success. If you don't mind taking a dump of your card's BIOS when you get a chance it would be very …

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Re: Number Nine Imagine 128 Series II problems. Bad memory possibly?

Posted on 2022-07-08, 18:54

by

by lemonlime

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Success! There were actually seven pins on that memory chip with bad solder joints. I just reflowed them with a bit of fresh solder and the card now works perfectly. I did a YouTube video on the repair for anyone interested in seeing it done under a microscope. https://youtu.be/NDT8kTUil0k Thanks …

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Re: Number Nine Imagine 128 Series II problems. Bad memory possibly?

Posted on 2022-07-05, 17:51

by

by lemonlime

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for your replies! The squeeze test was brilliant :D I narrowed the issue down to one corner of this DRAM chip here. https://vswitchzero.files.wordpress.com/2022/07/img_6729.jpg If I put pressure on it, the artifacting changes and will sometimes disappear. I took a closer look with a …

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Number Nine Imagine 128 Series II problems. Bad memory possibly?

Posted on 2022-07-05, 16:10

by

by lemonlime

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi All, I picked up a Number Nine Imagine 128 II card on eBay recently. The Cirrus Logic chip for basic VGA duties seems to work fine in DOS 6.22 and has a separate 512KB NEC 70ns chip the card. As soon as Windows loads the Imagine 128 II driver, I get artifacting with vertical stipes down the …

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Re: Problems with Pro Audio Spectrum 16 and PC MIDI clone card

Posted on 2022-02-02, 20:36

by

by lemonlime

in Marvin \ Sound

in Marvin \ Sound

Good news! I think I may have fixed it. I thought I was running the latest version of MVSOUND.SYS (3.23) but there is actually a newer 3.26 version floating around. As soon as I swapped the file out, the problem appears to have disappeared. I hard rebooted no fewer than 13 times to test, and MQDIAG. …

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Re: Problems with Pro Audio Spectrum 16 and PC MIDI clone card

Posted on 2022-02-02, 18:40

by

by lemonlime

in Marvin \ Sound

in Marvin \ Sound

I spent a bit more time troubleshooting this morning. I thought the PC MIDI card just wasn't working at bootup, but in actual fact, even when it did work it wouldn't work for very long. I just wasn't testing it for long enough. After about ~10 minutes of MIDI operation, the card would just stop …

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Re: Problems with Pro Audio Spectrum 16 and PC MIDI clone card

Posted on 2022-02-02, 18:32

by

by lemonlime

in Marvin \ Sound

in Marvin \ Sound

Make sure nothing is using IRQ9. Some older video cards have this option. Yeah I was wondering about IRQ9 as well since 9 and 2 are cascaded. My video card is a VLB Powergraph C33 (Western Digital paradise chip). I don't see any jumpers for IRQ assignment, but since the PC MIDI card works fine …

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Re: Problems with Pro Audio Spectrum 16 and PC MIDI clone card

Posted on 2022-02-02, 18:24

by

by lemonlime

in Marvin \ Sound

in Marvin \ Sound

I have a 486 system with a PAS, Aztech sound blaster clone and a PCMIDI card. This setup has always worked great for me. I don´t have access to this system at the moment to check any specifics in the config or anything like that but at least this should work. Good to know that someone else was able …

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Re: Problems with Pro Audio Spectrum 16 and PC MIDI clone card

Posted on 2022-02-02, 18:21

by

by lemonlime

in Marvin \ Sound

in Marvin \ Sound

Damn, I have no PAS cards or experience with them so I cannot comment on their resources... But just to make sure, pcmidi alone never has an issue, right? Thanks keropi - yeah, when I remove the PAS16 card from the system, it appears to work fine every time. I did ten power off/power ons in a row …

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Problems with Pro Audio Spectrum 16 and PC MIDI clone card

Posted on 2022-02-01, 18:54

by

by lemonlime

in Marvin \ Sound

in Marvin \ Sound

Hi All, Is anyone using one of the PC MIDI clone cards with a Pro Audio Spectrum 16 by chance? Both cards work together fine, but only sometimes . There appears to be about a 50/50 chance that the PC MIDI card is functional once I boot up and get to the command prompt. In the situations where it …

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Re: Music Quest MPU clone cards, anyone interested in them?

Posted on 2022-01-24, 18:40

by

by lemonlime

in Marvin \ Sound

in Marvin \ Sound

oh yes , this is definitely a bad jack :o I can send you a replacement if you want on the plus side at least this damage is not a crippling one... it sucks for sure but there is always the DB9 way - maybe even wire the 2xOUT ports so you make it the "ultimate" version if I can help somehow please …

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