Vintage Yamaha Receiver Cleaning Guide
One issue that may arise from buying a vintage receiver is that they may need a thorough cleaning and may need to have certain things replaced. The first thing that you want to do is open it up. Look for loose wires, fuses that don’t work or anything that looks out of place, i.e. places where something may have leaked. Next, grab a vacuum cleaner, and use the extension hoses to just suck up any dirt.
Use a warm cloth with some type of contact cleaner to wipe off any accrued dust or dirt. You need to then give the machine time to dry out. Clean out the RCA jacks with pure alcohol to remove any built-up crud that may have accumulated. Don’t turn it on as you may cause it to short-circuit. You may just want to leave it alone for several days.
Once everything is dry, try turning on individual sections of it. Don’t turn everything on at once. You’re trying to see if everything is working properly. If you smell anything funny or see smoke, turn it off. If something like this is going on, you may need to get your vintage receiver professionally repaired.
If everything does seem to be going OK, however, go ahead and completely power it up. Plug in some cheap speakers (older ones that you don’t mind losing if they blow). Let the receiver run for a while, and then you can go ahead and add whatever speakers or equipment that you were planning to attach to the receiver.