First post, by Paal
Hi!
First time posting here.
I have taken my old 80486DX out of the closet and installed the Sound Blaster CT-3670, which I thought would be a great replacement because the original CT-2230 had developed a problem related to the music, which was waaay to low and the sound effects were okay. I suspect there could be an capacitor issue with the music problem, but I haven't got a clue on which and how to test and check for the capacitance value. Help here is greatly appreciated!
The CT-3670 has been installed and works according to the input settings, but when I connect the cable to the "SPK out", there is a continious high buzzing outputting through the speakers that won't go away, unless I go into diagnose.exe and let the computer autodetect the settings for it. Then the buzzing goes away and everything works fine, until the next time I turn on the computer. I have tried different ISA slots, but with no success. I have tried cleaning the contact pins, but that didn't help either.
I have visually checked the PCB and the capacitors looks all good, not bulging or dried out.
There is no DRAM installed on the board.
I have used the drivers from the Vogon vintage library to install it.
When the card worked, I had great sound quality, but didn't get the sound effects to work properly. When I got the sound effects to work, it was lower and "drowned" into the music.