Re: Voodoo 2 RAM help

Posted on Today, 14:45

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The RAM clock is too high for 50ns chips, they've got to be 35ns or lower from what I recall. The fault is less likely to be the RAM chips themselves but the QFP chips often have weakened solder and loose legs so some lines that would connect to the RAM are disconnected. I've now fixed 5+ Voodoo 1 …

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Re: Voodoo 2 RAM help

Posted on Today, 14:36

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

dominusprog wrote on Yesterday, 15:55: My suggestion is to remove all TMU-0 RAM chips and test them on a different card first. I was hoping something with less soldering 😀 Thanks, i will do that i suppose....

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Voodoo 2 RAM help

Posted on Yesterday, 07:36

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, i recently acquired Diamond 3dfx Voodoo 2 PCI graphics card, and everything works ok, but when i execute mojo, there is 1MB of RAM dedicated on TMU 0, and 2MB on TMU 1. I was hoping the changing of this 4 chips of RAM connected to TMU 0 could solve the problem, but i cannot find the same chips …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-23, 13:25

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

rasz_pl wrote on 2024-04-23, 13:14: "measure (DC voltage mode, 5V range)" make a list with pin number and measurement. Start with pins 67-70 and 79-94, 38 and 47 are also interesting. It does look like both -5V and -12V are used for reference voltage for thermistors? Weird. Ok, thanks a lot!!!

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-23, 07:22

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

TLDR version is: "-INx -Analog Input pins (pages 4-7)." I'm not an electrician, there is so much things i don't understand there. Should i measure resistance from this "table", or only voltages? For example, on pin 2 it says : OD 10K-3V-up - Open-drain with 10Kohm 3V pull-up, 8mA sink current. What …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-23, 07:10

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Curious what PSU you are using .... if it is too new the board may not like it. Have a few older slot 1 etc that anything newer than ATX 12v 2.03 won't work, fans spins and plays dead. Most newer psu are ATX 12v spec 2.3 or higher iirc. Just a thought. I didn't think about that, yes, it is a new …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-22, 09:52

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh, In that case I advise you to find a local hackerspace/makerspace and get some hands on help. Measuring on pins of 100 pin TQFP is no walk in the park, its very easy to slip up and fry something. One safe way is first mapping where pins we are interested in connect to and measuring in those …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-22, 08:18

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I do have schematic for K7V, sadly its bad quality paper one scanned long time ago, no ocr and low readability :( ASUS K7V.7z Asus liked to do "ASICs" on their board for things like power/fan/temp monitoring, and this board is no different. Suspects are: 1. "AS61256-8" mentioned by me some time ago …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-21, 19:44

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So it doesn't go to the ram in the POST, it stops at CPU? Typically before board checks for RAM, first POST checks that all power rails are up and running. Then CPU is initialized, then RAM (IIRC.) So it could still be a power issue, a CPU detection issue, or fan detection issue. Some socket A …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-21, 12:26

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok, so at least now we know its the BIOS doing the beeps and CPU is running. How about only CPU and nothing else plugged? no ram no keyboard nothing, just mobo cpu speaker and supply. Siren again :( So it doesn't go to the ram in the POST, it stops at CPU? Silly question, do you know the CPU’s you …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-21, 09:25

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

rasz_pl wrote on 2024-04-20, 23:14: Ok, so at least now we know its the BIOS doing the beeps and CPU is running. How about only CPU and nothing else plugged? no ram no keyboard nothing, just mobo cpu speaker and supply. Siren again 🙁 So it doesn't go to the ram in the POST, it stops at CPU?

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-20, 22:51

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The problem with checking caps on board is that if you have two or more connected in parallel (often the case on CPU V_core rail ,but not only) the meter will show the average ESR for all of the parallel caps... so you'll never know if one of them (or all of them) are bad, unless absolutely all of …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-20, 13:21

by

by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here is another great tool to assist with diagnosing motherboard problems. An ESR meter allows you to test capacitors while in circuit. You can grab it from Aliexpress. Make sure you calibrate it when turning it on each time (short the 2 cables and push zero). F8A76735-2BFB-432B-9ABD-191F8FD138ED. …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-20, 13:16

by

by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If it hasn't been tried already, try plugging in different 3-pin fans in the CPU fan header. Some older motherboards sound the hi-lo-hi-lo over-temp alarm if they can't detect / read the fan's tachometer (RPM) signal. In particular, avoid socket 754 and 939 fans that have a built-in thermistor, as …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-20, 13:13

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

zuldan wrote on 2024-04-20, 11:34: Richard gives an overview on them https://youtu.be/bMUzTGnvrbU Great video, will buy it right now....

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-20, 11:05

by

by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I’ve had the cards not work under these circumstances. - BIOS version old and buggy, does not send post codes correctly on the bus line - Sometimes only certain PCI slots provide post codes - The post analyzer card is faulty (mine died when installing in a mobo with a short) Tip: ISA slots are more …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-20, 09:03

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by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

WTF is wrong with reply with quote???? My reply is in quote, and Your comment is down where mine supposed to be????

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-20, 08:52

by

by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Post code analyzer would really help here. They are super cheap. Here are all the Award beep codes https://blog.theretroweb.com/2024/01/20/award-bios-beep-and-post-codes-list/ “Either the CPU is not seated properly or the CPU is damaged. May also be due to excess heat. Check the CPU fan or BIOS …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-20, 08:51

by

by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Post code analyzer would really help here. They are super cheap. Here are all the Award beep codes https://blog.theretroweb.com/2024/01/20/award-bios-beep-and-post-codes-list/ “Either the CPU is not seated properly or the CPU is damaged. May also be due to excess heat. Check the CPU fan or BIOS …

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Re: Asus K7V Slot A hi-lo-hi-lo beeps

Posted on 2024-04-20, 08:20

by

by butjer1010

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, i recently bought Asus K7V motherboard, with Athlon 600 CPU. Seller sent me the pictures of working board, but when i tried the board the first time, there was no picture. I connected the speaker to the board just to hear the beep codes if there are any, and i hear "siren like" hi-low-hi-low-hi …

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