First post, by seanneko
I've got an Ultrasound Classic 3.7 fitted with 1MB RAM. When I bought it, it was dead. When installing the drivers, the computer would freeze when trying to detect the card. I replaced the GF1 chip which fixed the problem and got it working again, but it still has another issue.
Whilst sound effects all play perfectly just the way they're meant to, the music plays slowed down. It sounds like it's about 20% too slow. All games are affected - doesn't matter which one I try. All the instruments sound correct and it otherwise seems to work okay.
What would cause something like this? I thought about replacing the crystal in case it's some sort of timing issue, but the old crystal has no markings so I don't know what type it is. Does anyone have any ideas to try?