It's unclear from your post what the state of things was before and after the work you did.
I'm going to assume, possibly incorrectly, that it didn't work at all when you first got it, and the wavy lines are what you got now.
First thing to check is the voltages. Download the service manual and make sure you've got everything where it's expected to be.
I'm also assuming you have the right equipment to do this stuff, and you know what you can and can't probe.
https://crtdatabase.com/crts/commodo...odore-1084s-d2