I'm getting a "LOUD POP" sound now.

[pearsall001]

Out of the clear blue I just started getting the loud pop from my NAD T773 AVR (over 4yrs old). It first started when I hit the mute button on the remote which I've done plenty of times before. It's only on the left front speaker.

It also does it when I change inputs (from cable to CD, changing music modes etc.) Also if I forget & shut my gear down in the wrong procedure (AVR first then the two channel amp) it also does it. I'm usually pretty good at making sure I turn the amp off first before the AVR (now it doesn't do it)

What the heck is going on here? I'm sure it's in need of a service call but I wonder if it's worth it being 4yrs old & being some what dated on audio/video technology. Maybe it's time I looked at other AVR's. I've read good reviews on the new Onkyo gear. Any thoughts

 

[TLS Guy]

Out of the clear blue I just started getting the loud pop from my NAD T773 AVR (over 4yrs old). It first started when I hit the mute button on the remote which I've done plenty of times before. It's only on the left front speaker.

It also does it when I change inputs (from cable to CD, changing music modes etc.) Also if I forget & shut my gear down in the wrong procedure (AVR first then the two channel amp) it also does it. I'm usually pretty good at making sure I turn the amp off first before the AVR (now it doesn't do it)

What the heck is going on here? I'm sure it's in need of a service call but I wonder if it's worth it being 4yrs old & being some what dated on audio/video technology. Maybe it's time I looked at other AVR's. I've read good reviews on the new Onkyo gear. Any thoughts

Clearly the unit needs service, as to cause, that could only be found on the bench.

 

[fmw]

Clearly the unit needs service, as to cause, that could only be found on the bench.

Agreed but my vote would be for a dirty switch. You may want to go get some tuner cleaner in a spray can and apply it to the pots and switches before taking it for service. That might clear it up for you. Tuner cleaner is cheap and readily available at Radio Shack or any electronics parts distributor.

 

[Haoleb]

Agreed but my vote would be for a dirty switch. You may want to go get some tuner cleaner in a spray can and apply it to the pots and switches before taking it for service. That might clear it up for you. Tuner cleaner is cheap and readily available at Radio Shack or any electronics parts distributor.

Definetly do not do that. Most likely all the muting and input switching is done by relays, not a traditional switch. Its likely that the volume is even done digitally. Its also not a task for someone with no prior electronics experience especially in a unit as complex as this.