1988 300sel (w126) Radio speakers no longer working

[xaliscomex]

Own a 1988 300sel (w126)

Radio speakers are not working anymore and this happened immediately after I replaced the old window switch console with a newer console. The newer console came with its own switches.

Upon installing the new console, I immediately noticed that not all of the speakers were putting out sound. I could hear only the right side speakers working. I adjusted the fader wheel (switch) to see if that would help but instead I heard a loud pop. The right side speakers continued to work after the pop.

I removed the newly installed console and reinstalled the old console with its own switches. Now I have NO sound coming out of the 6 speakers.

I swapped the consoles back and forth and got the same result, NO sound is coming out of the speakers.

Sure seems like an electrical component was probably fried. I think the issue has something to do with the fader switch.

Any advice on how to get my speakers working again, is greatly appreciated.