[Gogar]

There's a lot of horrible info on this thread; if you want to fix your problem please stick to what I said about checking your speaker cables.

After that, Contact cleaner and MAYBE De-oxit (which is great) if you actually know where to spray it. Almost 100% guarantee spraying it in the right place will involve a little disassembly, maybe a lot.

All the other info about watts and ohms and amperes and whatever is worth exactly what you paid for it.

Ian does this every day and knows a lot about it.