sb16 ct2830 digitize sounds issue \ VOGONS

sb16 ct2830 digitize sounds issue

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First post, by yukin

yukin Offline

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Rank: Newbie
Posts: 7
Joined: 2014-04-24, 20:09

i have a sound blaster 16 model ct2830 running in dos 6.22. i have a problem that is not consistent but when it happen it stay like that for a while. all opl3 sound have no issue at all, the problem is with the digitize sounds. either no sound, low sound, or high scratching static noise. i had the problem once for a week then it just stop and work perfectly for a few days then it start again. is there something related to the hardware that need to be check to fix it? thanks

Reply 1 of 3, by wierd_w

Posted on Today, 00:55

wierd_w Offline

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Joined: 2023-07-14, 06:20

Do you have leaky caps on your mainboard?

Reply 2 of 3, by yukin

Posted on Today, 00:59

yukin Offline

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Rank: Newbie
Posts: 7
Joined: 2014-04-24, 20:09

not a single visible leaky cap from what i see

Reply 3 of 3, by MagefromAntares

Posted on Today, 02:06

MagefromAntares Offline

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Posts: 151
Joined: 2026-04-28, 00:23
Location: Hungary

Hi,

I assume that you have checked for leaky caps on the card also not just only the motherboard.

There are some other things that can be checked according to the symptoms:
1. Bad solder joints on the components related to digital output on the card, making intermittent connection(Explaining why the sound goes from non-existent to distorted to actually working good. Checking every solder joint is a bit of pain though.)
2. Maybe an overheating issue, compare the temperature of the card's main ICs when the issue happens and when it doesn't, you can either use a remote thermometer or an IR camera to do that when the computer case is opened.

Less probable causes:
1. Bad connection with the ISA slot. (Unlikely, as that would most likely also effect the OPL3 voices too)
2. DMA transfer error from the motherboard. (Unlikely as that would explain the no sound, and in some cases the high scratching static noise, but not the low sound scenario)

"A process cannot be understood by stopping it. Understanding must move with the flow of the process, must join it and flow with it." - Dune

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