This was my grandpa's who passed away about 4 years ago, and he bought this about 5 years ago. Its a really nice receiver, I have it hooked up to two Polk audio 5JR 60469 speakers. It sounds really nice, extremely loud, no need to take it past 1/2 volume even though its only 90w (45 per channel), and those Polk monitors hardly distort. It has a remote with volume control and a volume knob, which doesn't make sense except for that when you turn up the volume on the remote it moves the knob. I also have a JBL 200w sub, but that's fed directly from my computer and gets its power from the wall.
The only problem I have with it is that sometimes there will be a buzzing from the speakers. I ruled out my computer, as it still does it when you unplug it, and the speakers are fine hooked up to anything else. I don't think it is the caps, as the primaries are Nichicon, and all the other caps are rubycons, I think it is some connection issue, as it sometimes goes away if you wiggle the input connections from the computer, and will always go away if you smack it lightly.
Any Ideas?
The only problem I have with it is that sometimes there will be a buzzing from the speakers. I ruled out my computer, as it still does it when you unplug it, and the speakers are fine hooked up to anything else. I don't think it is the caps, as the primaries are Nichicon, and all the other caps are rubycons, I think it is some connection issue, as it sometimes goes away if you wiggle the input connections from the computer, and will always go away if you smack it lightly.
Any Ideas?
Attached Files
. I would plug in my Sony Turntable to the PHONO jacks along with the ground wire to the ground screw and it would play well. Sometimes the buzzing would gradually get louder until it got so loud that the protection circuit goes on and an orange "P" would light up on the LCD. After I unplug the turntable, it goes back to normal. The last time I plugged it in, the buzzing got louder again until I heard a pop from the speakers. The receiver froze and it would not respond to the power button. Both the DBFB and Mute light was on and the LCD which said PHONO showed only parts of the letters lit. The "P" symbol didn't light. After a few seconds I saw a small amount of "Magic Smoke" coming from the receiver top. 
I quickly unplugged it after. I opened the top cover and looked for "fried" components. I didn't find any capacitors or resistors burnt or other burn marks on the PCB. The fuses near the transformer weren't blown. However I found the leads on what appears to be a Table Rectifier Diode burnt/charred. What I realized after is that the RCA plugs on the turntable seem to be frayed as when I plugged them into my computer, I also heard buzzing and crackling which was the same as I heard on the receiver before it broke. Is this receiver now completely broken? If I replace that table rectifier diode will it work again? I have found similar table rectifier diodes online however I am not sure what the original voltage and Amps were on the original piece.
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