/diy/ - Do It Yourself

>>908338
Hmm, I think someone has been hacking around in this thing OP. This unit should have two panel mounted fuses (one per channel) for overload protection and a mains fuse. Three in total according to the schematic. In your unit, I see at least 5. I say at least, because I would not expect the mains fuse to be located so haphazardly on the bottom of the transformer like that, the mains fuse may be on a PCB somewhere (if anywhere, the power supply board, mounted immediately right of the transformer with the blue capacitors) which means those three fuses have been added because reasons. What those reasons are is anyone's guess.

The red wires I have highlighted with blue lines do not appear to be in a factory position either, wires are never passed through holes in metal without a grommet (to stop vibration wearing through the insulation, resulting in a short to chassis) nor are they strung as tightly as the wire on the right is. They would be bundled in with the rest if they were factory original. The brown wire in the inset image also appears to be a poor hack job done after it was built. Not sure whats gone on in this poor stereos history, but it appears to have been rough.

I was going to suggest that your lights will be powered by the only wires that DO NOT terminate on the power supply board (according to the schematic) but considering the works done I'm not sure what is going where in there. Might be time to flex that EE muscle and learn to circuit trace, or lug it to your next class and see if someone there can help you trace it out. Not much I can do from this point without it on a bench if front of me unfortunately.

Your English is better than a lot of native speakers I know by the way. Stress less.