[jafo9]

I have recently moved to the house i am in. its about 20 years old. the room where my HT is in seems to have 3 circuits. all the receptacles are wired to separate the top and bottom plug in. i have lamps plugged in to the upper pole which are controlled by a single switch. the lower pole is unswitched and it where i have the ht plugged in. nothing else on this except a small wireless network extender. in the room there are also 4 120 volt overhead recessed lights on a 3way switch. Initially the lights were on a dimmer and there was terrible hum through my Denon AVR-3300. I changed it out for a fixed 3way switch and the hum seemed to go away. The other components in the system that are draw power are: 1) Samsung DLP TV, Pioneer DVD, Panasonic VCR, SA 3250 box, Samsung STR-165, a 7777 Channel Master TV amp, and a Def Tech Supercube 1. I have noticed recently that my reciever will reset or get confused and act like it lost the audio signal. It shows the channel levels on the display and then goes back to ProLogic or whatever. I initially thought this was due to OTA sound signal dropout and blew it off. Last night I was watching the ALCS game on my SA 3250 which feeds digital audio through a coax cable. It did the same thing as the OTA box and caused the Denon to act like the power had been cycled on and off and then I lost all digital feeds and any analog feeds had the hum back. I powered everything off for about 3 minutes and it all came back to life. It happened again tonight during CSI on the OTA feed but it didn't cause the hum problem (the OTA feed goes through a toslink cable).


My question: this seems to me to be coming from the power supply to the room. is this from a voltage spike? i have it all hooked up to a surge protector but its the usual sams club $30 variety. i have read a few of the threads about the monster conditioners with interest. if they live up to the hype, will they solve the problem. if so, which product is best for me? if this isn't my problem, any ideas?


thanks for any replies.

 

[Artisn]

A Monstor conditioner probably won't fix anything. All of those components have internal power supplies with built in conditioners. I'd check all connections and try a different power outlet. If your house is 20 years old it is possible there is a grounding issue with the house. An electrician would be able to detrermine that. Hope this helps.

 

[photogold]

Jafo9,


The problem seems isolated with your receiver. Maybe you don't have an interference problem, but maybe there is just something wrong with your receiver?


You can try a power conditioner, but make sure that you can return it if it doesn't fix the problem.

 

[jafo9]

so maybe the power supply in my reciever is going bad? thats not good news. i was hoping to get some more miles out of it. it's wierd though, that hum sounded just like the hum when i had the underrated dimmer switch on the overhead 3way lights.

 

[Toxarch]

Have you checked if your receiver is overheating?

 

[jafo9]

unlikely, it has a shelf all to itself so no radient warming from below and there is a good 2-3 inches of head room to the shelf above it. i rarely close the door on the cabinet its in and never when it is on.