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First post, by Bernkastel7734

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Hello,
I have changed graphics card in my dos pc.
New card is VLB Trident 9420DGI. Pc specs:
Intel 486DX2-66
QDI UL486P3 Green Board (http://www.win3x.org/uh19/motherboards/8299)
8 MB of RAM
It freezes randomly. Sometimes during executing autoexec or cofig.sys. Tried to bypass them by using F8. Still I can not run any game or program. Sometimes it executes autoexec and config.sys but still I can not run anything. I'm using soundcard, disk controller and Com/LPT card. Sadly I don't know names of them. Tried to take them out and leave only disk controller. But the freezes continue. Changed back to old ISA card ( Trident TVGA 9000). What's going on? Is it something like resource conflict or the cars is broken? Thanks for any help.

Reply 1 of 13, by Cyrix200+

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VLB can be a fickle thing.

Are there any jumpers on the new graphics card? How are they configured? Is the disk/controller/com/lpt card also VLB?

1982 to 2001

Reply 2 of 13, by Bernkastel7734

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Cyrix200+ wrote on 2021-10-21, 17:50:

VLB can be a fickle thing.

Are there any jumpers on the new graphics card? How are they configured? Is the disk/controller/com/lpt card also VLB?

All of them are normal ISA cards. And here are the jumpers on that card. Haven't tried to change the jumpers.

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Reply 3 of 13, by Bernkastel7734

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Also I have just noticed that there is ceramic capacitor broken in half. Can it be the problem? I mean, I know it needs to be replaced but can it cause such behavior?

Reply 4 of 13, by Cyrix200+

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Bernkastel7734 wrote on 2021-10-21, 18:07:

Also I have just noticed that there is ceramic capacitor broken in half. Can it be the problem? I mean, I know it needs to be replaced but can it cause such behavior?

I guess so. Which one is it? Do you have more pictures of the board? Does anything else seem damaged?

1982 to 2001

Reply 5 of 13, by Bernkastel7734

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It's that one marked as c38. Nothing else seems damaged

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Reply 7 of 13, by Bernkastel7734

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Cyrix200+ wrote on 2021-10-21, 18:34:

Thanks. You might want to try and close jumper J10 (FAST CLK). It might help, but I'm not 100% sure how to interpret the setting.

Sadly, it changed nothing

Reply 8 of 13, by Cyrix200+

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Bernkastel7734 wrote on 2021-10-21, 18:39:
Cyrix200+ wrote on 2021-10-21, 18:34:

Thanks. You might want to try and close jumper J10 (FAST CLK). It might help, but I'm not 100% sure how to interpret the setting.

Sadly, it changed nothing

That's too bad. There are people much (MUCH) more knowledgeable than me on this forum, so let's see what suggestions follow mine 😀

1982 to 2001

Reply 11 of 13, by Bernkastel7734

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I have swapped hdd controller for another one. Took out any other cards, now it freezes after a dozens of seconds after running any game. Tried to run Win95 but neither of my hdd controllers support hdd I have win95 on.

Reply 12 of 13, by Ydee

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I don't know if it can help, but try unplugging the JX7 jumper. I also have DX2-66 and Trident VLB and jumper JX7 unplugged (for bus clock 33 MHz). The closed JX7 is in the manual for higher clock above 33 MHz. And replace the broken capacitor, of course.

Reply 13 of 13, by Bernkastel7734

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Ydee wrote on 2021-10-22, 08:48:

I don't know if it can help, but try unplugging the JX7 jumper. I also have DX2-66 and Trident VLB and jumper JX7 unplugged (for bus clock 33 MHz). The closed JX7 is in the manual for higher clock above 33 MHz. And replace the broken capacitor, of course.

Thanks You a lot. It seems to do the trick.