Soundblaster CT1770 no sound in left channel \ VOGONS

Soundblaster CT1770 no sound in left channel

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First post, by vetz

Posted on 2013-02-04, 18:51

vetz Offline

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My CT1770 recently stopped sending any sound from the left channel. Only sound from the right one. If I use the mixer in Windows and move the slider from middle to left, all sound disappears. I first thought it could be the cable or the PC, but I just moved it over to my 440BX system and hooked it up to my Cambridge 2.1 soundsystem. Same problem...

Any ideas what might be wrong?

I also btw played some high quality MP3's on the card. I am AMAZED how bad it sounds compared to playing it through the same speakers with my Soundblaster X-FI. It is like night and day... Either we've come a long way since 1992 or my card is dieing (or both) 😜

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Reply 1 of 5, by Stull

Posted on 2013-02-04, 19:50

Stull Offline

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Probably not as easy as a dirty potentiometer?

Reply 2 of 5, by vetz

Posted on 2013-02-04, 20:06

vetz Offline

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The knob is a bit dusty, but how would this effect the balance? I've also got the built-in amp disabled. Adjusting the knob on the back does nothing when playing atm.

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Reply 3 of 5, by Stull

Posted on 2013-02-04, 20:26

Stull Offline

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I've experienced sound cutouts similar to what you're describing on old stereos with dirty analog volume knobs. Guess that's not the case here. 😉

Reply 4 of 5, by Old Thrashbarg

Posted on 2013-02-05, 00:44

Old Thrashbarg Offline

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I think the first thing to do is check the jumpers that disable the amp... there's one for each channel, and I believe they directly switch the audio path, so maybe the one for the left channel isn't making good contact.

My second thought would be that maybe a coupling cap went bad.

Reply 5 of 5, by vetz

Posted on 2013-02-07, 23:30

vetz Offline

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Good tip Old trashbarg. I'll try to put on a new one on the left channel.

If that doesn't work I fear it's bye bye 1770 as a sound card, as I don't have the skills or tools to recap the whole board. Can still use its SCSI adapter though 😉

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