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HK 7200: left channel is 23dB lower than others.
I've had my HK 7200 for about 2yrs now. I have noticed that the left channel has slowly been declining in volume ever since my move from Maryland to Florida 5 months ago. When I first set my system up when I got here I noticed about 9db difference. Now all off a sudden there is about a 23db difference. I can't even adjust the speaker levels to compensate for that big of a difference. I am guessing that something must have gotten rattled during the move. However, I did pack it in its original shipping package.
Has anyone ever experienced something like this?
Has anyone ever experienced something like this?
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Is your receiver still under warranty?
no, I'm about 4 month out from the end of my warranty. 
try switching speakers to make sure you haven't blown a speaker first.
Yes, I've switched out the left speaker and cable with the same result. I think I might open it up to see if there are any obvious blown components. I wish HK could provide me with a schematic so that I could troubleshoot it myself. Anyone have any experience troubleshooting their own equipment?
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Unfortunately, it sounds like it's a problem with your receiver. Are you or do you know anybody who is electronic saavy? My brother-in-law fixed my HK reciever by replacing a capacitor, which he diagnosed using his equipment. Otherwise, you may have to send it to a repair shop, if you are not interested in getting a new receiver.
| Originally Posted by bestboy4 Yes, I've switched out the left speaker and cable with the same result. I think I might open it up to see if there are any obvious blown components. I wish HK could provide me with a schematic so that I could troubleshoot it myself. Anyone have any experience troubleshooting their own equipment? |
You mean front left channel right? As an interim solution you might switch your cables to send your back left channel to the front left speaker. If you only have a 5.1 setup this could be a permanent if imperfect solution.
I had the same thing happen on my AVR510. I opened it up, and it looked similar to the inside of an ATX PC chassis. I removed all the cards and cleaned the contacts. I also cleaned up the routing on the wires. All channels have been dead even ever since. Watch the capacitors, and do not misplace the cards in their slots. Without a schematic it is hard to tell what is live, unless you leave it unplugged for a while.
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