I just bought a 98 concorde lxi and no sound

Hello georgouseyes,

The problem could be in the output from your receiver to the amp or in the amp itself.

First check to see if the amp powers up. If it doesn't, check the main power fuse (usually located under the hood near the battery). Also check the power and ground connections on both ends.

If the main fuse checks OK, check both onboard fuses. There's 2 35A fuses on the far right.

If the amp powers up OK and the onboard fuses are not defective, it's possibly the output from your receiver or line output converter. Replace the RCA cables with a known good pair. If there's still no sound, I'd suspect that the amp itself is defective.

Hope this helps.