Question about JVC TH-M505 System

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Subwoofer shuts down

I bought JVC TH-M303 about 3 years ago. When i turn on my system subwoofer turns off after making a big sound in about 3 secs. because of that i get no sound. I am only able to watch video.

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Re: subwoofer shuts down

Check the connection in the back of the sub,where your wire plugs in from the DVD unit, the connector is loose in the unit itself. Had mine replaced and is doing the same thing again

Posted on Dec 05, 2007

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My subwoofer shuts off when I turn it up too loud. How do I fix it?

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Sub woofer its on for 3 sec..

your cooling fan is not engaging and coming on like its suppose to. One, the fan is probably burned out, which sucks because its low voltage and the only thing on the board that is low voltage. Two, there is a thermostat type component that tells the fan to start which HAS burned out and doesnt start the fan accordingly. If you look at the back fan and turn everything on you will see the fan either doesnt start or starts right as the relay trips turning the sound components off. If it starts at all your fans good.The thermostat component will need to be replace and I cant recommend a source. Just trying to explain the problem so you can look for the right repair. Hope it helps. I have one of these and have found this is the problem, but cant find the solution.

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Systems shuts off if sound gets too loud.

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1 Answer

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