Picked up nice (cosmetically) mini boombox Sanyo M7770K. At full volume, sound is barely heard, only is one speaker, using either FM or AUX. Not louder than an iPhone with speaker off, laying on the floor... Before I take it in for repair, not even sure what that's going to be like, thought I'd ask here, if anyone has any suggestions for troubleshooting. I haven't tested any components yet, not that knowledgeable with electronics, but will give it a try... One of the areas on the circuit board (named "Radio Tuner P.C. Board" in the service manual), had wax like substance on it, maybe something leaked out. I have circled the area in red in the attached picture. After cleaning it off, no change. If I yank on wires between the boards, the second speaker can be heard but still very low volume with the volume control turned all the way up. Trying to think what's next. I'm not bothered with radio or the tape not working for now. Having AUX only, would be just fine for now.
Thanks much for any thoughts!
Thanks much for any thoughts!