

Issue: Both the left (front and rear) direct speaker outputs and the left RCA output are significantly weaker than the right outputs. At max volume the right signal is correctly loud while the left is whisper quiet.
I ruled out a speaker Issue, and I also tried hooking the stereo to a 4 channel amp through the RCA output, same story.
This makes me believe the problem is deep inside the head unit. So, as I usually do, I take everything apart and then go cry on reddit for help...
Does anybody have any idea what I should be looking for? I'm trying to find a wiring diagram for this thing but it's like 30 years old and I doubt I'll succeed...
help.
u/Shlangengesicht — 10 days ago