I bought a used 851N in December 2022. I was very happy with it until recently, and know it was a favorite of Jon and some of the others more experienced on this board, so hopefully I can get some help.
I noticed slight noise from the left speaker a few days ago, which is not usual, this time it sounded like intermittent FM radio static. I have 2 mischievous cats and have yet to build final cabinets with crossovers inside, so it wouldn't be the first time I've had to reconnect a wire nut. I am happy with the sound and very busy, so good carpentry hasn't happened yet. If I am listening to a great song or movie, I fix everything right away. If I am dead tired and throw on a sitcom rerun and hear an issue, I usually procrastinate. Yesterday I noticed the problem was worse, with the static getting louder and happening almost constantly. I rechecked the connections - still noise. I finally swapped the speaker for a commercial one, and had the same noise, so it isn't my speaker. Switching the left and right outputs from the 851N and I get the static on whichever speaker is attached to the left 851N output (regardless of swapping channels on the amp). I was using balanced connectors out of the 851N. Switched to the RCA connection, and I have no static, but I do have a low hum. This would be fine for a non-audiophile set up, but I am not happy with it. I didn't used the RCA connectors before, so I have no idea if the hum was there before. Any suggestions to fix or troubleshoot this further? I have to throw out this device after only 1 year, but I knew that risk buying used.
I did buy a new TV in December, which also involved disconnecting and reconnecting all equipment. This is probably unrelated as everything worked well for 3 weeks.
I noticed slight noise from the left speaker a few days ago, which is not usual, this time it sounded like intermittent FM radio static. I have 2 mischievous cats and have yet to build final cabinets with crossovers inside, so it wouldn't be the first time I've had to reconnect a wire nut. I am happy with the sound and very busy, so good carpentry hasn't happened yet. If I am listening to a great song or movie, I fix everything right away. If I am dead tired and throw on a sitcom rerun and hear an issue, I usually procrastinate. Yesterday I noticed the problem was worse, with the static getting louder and happening almost constantly. I rechecked the connections - still noise. I finally swapped the speaker for a commercial one, and had the same noise, so it isn't my speaker. Switching the left and right outputs from the 851N and I get the static on whichever speaker is attached to the left 851N output (regardless of swapping channels on the amp). I was using balanced connectors out of the 851N. Switched to the RCA connection, and I have no static, but I do have a low hum. This would be fine for a non-audiophile set up, but I am not happy with it. I didn't used the RCA connectors before, so I have no idea if the hum was there before. Any suggestions to fix or troubleshoot this further? I have to throw out this device after only 1 year, but I knew that risk buying used.
I did buy a new TV in December, which also involved disconnecting and reconnecting all equipment. This is probably unrelated as everything worked well for 3 weeks.
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