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The Kenwood VR517 home theater system wants to just turn itself off at about 5 minutes of being on. this just started happening this week.

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  • Bob Ferguson Jul 27, 2008

    The center and subwoofer are silent then after about 5~10 minutes a hssing noise starts in the sub woofer and finally gets guite loud. I recycle power and the noise goes away then returns after several minutes

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If this unit stays on for 5 minutes, and it appears to be playing normal, a bad speaker could be the cause unless you are using speakers that are not compatible with this unit.

The specs on this unit are 100 watts per channel and require 8 ohm speakers. if you are using speakers that are 6 ohms or 4 ohms, you will overheat the unit quickly and it will shut down. It is not designed to use anything less than 4 ohm speakers.

If you are using the speakers this unit came with, or you know that the speakers are 8 ohms (it should be listed on the speaker where the wires plug in), go ahead to the next step.

The first thing to do is to unplug one speaker, it does not matter which one, just pick one to unplug from the back of the receiver or right at the speaker. If you unplug one right at the speaker, make sure that the speaker wires do not touch together or touch anything else, they must be insulated from anything metal or conductive.

After one speaker is unplugged, turn the unit back on and let it play normally the way it was when it shut down after five minutes. If the unit continues to play for a long time, at least 30 minutes or more and does not shut down on its own, you have just found the culprit causing your problem. Some speakers may sound like they are OK, but still can cause a problem.

If the unit shuts down again after five minutes like before, go ahead and plug that speaker back in and do the same thing with one of the other speakers.

Continue this process until you have isolated one speaker as being the problem.

If you go thru the entire process and it still shuts down, you may have an internal amplifier problem. It can be something as simple as some heat stressed solder joints that need to be reflowed, or it could be a bad amp IC. This unit uses 3 different amp IC's and it could be any one of them or a component in the amp circuit. Sometimes it can even be a power supply failure. In any case, if the above steps do not work, you need to take it in and be serviced. There are no other end user options to perform.

I hope this helps with your problem, if you need more help just ask.



Posted on Jun 21, 2008

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Posted on Jan 02, 2017

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