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NAD 743 Issue
I having some issues with my new NAD 743 receiver and wanted to see if anyone can offer advice or maybe diagnose the problem. I’m actually on my second one and it exhibits the same problem as the first. My current setup as is the following: I have Comcast digital cable that is fed directly into my Tivo. The audio feed is sent via the analog outs, and the video is the S-Video out. From Tivo, my audio out has two outputs. One is sent directly into the NAD 743 via analog out and the second output is sent to my TV which is a Sony 32” flat screen model KV-32FS210 via analog out. I did this so I could watch TV without the receiver should conditions warrant it. For video I have the S-Video out running into the Sony TV. Additionally, I have the NAD 513 DVD/CD player. I run component video cables out directly to the Sony TV and run the digital out directly to the NAD 743. I also have X-Box, which sends the component video directly to the TV, and the audio via the optical digital cable to the receiver. My problem is the following. While I watch TV or DVDs I’ll get static pops that sound like they are coming from the right channel (occasionally it sounds like both channels). This occurs randomly, sometimes I get them every 10 minutes, other times I can go an hour or so without them. There is a slight possibility its coming from the TV, but I’m 95% sure the sound is coming from the speakers (PSB 5Ts) The speakers are about 2 ft away from the TV on both sides. In addition, about 50% of the times I’ll get a visible white line across the TV in combination with the popping sound. Let me state there are no video connections to the TV from the receiver (I disconnected the one once I had my setting straight). The pops vary in volume, sometimes soft, but mostly rather loud and noticeable. I’ll also get the same problem while playing x-box. While watching TV, if I pause Tivo, I have also experienced the pop coming from the speakers, even though no sound is being played. Some of the trouble shooting I did was to switch the speakers to opposite channels to see if that is an issue. I still get the popping sound coming from the right side. I tried switching the cables from left channel to right and still got the same popping sound mostly from the right side. I’ve tried another test where I would only have speaker connected to the receiver and watched TV via one channel. When I did this with the right channel, I got the static pop. I then disconnected the right channel and hooked up the left channel only. After watching for 30 minutes, I got a similar static pop in the left channel. The only time I’ve seem to eliminate the pops is if I play a CD in the NAD 513 with the TV turned off. I’ve only done this test for about 30 minutes, but it seemed to work then. If I turn the TV I get the problem. I called a few service centers for the TV to see if they thought that was a problem, but they told me it had to be the receiver. If I watch TV from the coaxial cable directly, I do not get any pops or lines across the TV, same goes if I run the DVD player with analog ins on the TV, it works perfect. Lastly, I’ve tried three basic surge protectors. I believe they were from GE, Tripp Lite and another brand that is escaping me at the moment. I’m really hoping to stick with NAD as the sound is great, but if I can’t get it to play correctly it’s not worth a dime to me. I actually bought the NAD 743 locally because I was afraid of the issues with the 752 and didn’t want to buy it online and have to ship it back. Any suggestions or ideas would be greatly appreciated.
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