Question about Yamaha YST-SW150 Speaker
If it is an amplified subwoofer, then it is likely that the amp is going into protect mode.
It sounds like either the sub (speaker) is blown, possibly a fried voice coil, or it could be the amp itself, over time the caps on the PCB dry out and fail.
I would disconect the speaker (keep the two wires from touching) and see if the amp then turns on and stays on. If it does then the speaker is faulty, if it still goes off then there is a more serious problem.
Posted on Jun 14, 2009
Try turning it on and see if it shuts itself off, if so it is probably confused. I would put it in a dark closet for a week or so to teach it a lesson, then see what it does. Or you could unhook the speakers and see if it works fine, maybe your speaker wires are touching each other and grounding out something.
Posted on May 09, 2009
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Posted on Jan 02, 2017
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Apr 23, 2016 | 2002 Toyota RAV4
It could be that there is a frayed speaker wire touching the back of the receiver and when playing at a low level the speakers do not require that much power, however when the level from the speakers increases more power is required and if there is a frayed speaker wire touching the back of the receiver there could be a short causing the receiver to shut down. A way to avoid the frayed wire is to use "Banana Connectors" that the speaker wires goes to and the connector will plug into the speaker posts. Please try the following to see where the issue is coming from. Have the receiver turned off, make sure all the speaker wires are labeled, and disconnect them from the speaker terminals. Turn the receiver on select a source that would give you sound if the speakers where still connected and turn the volume all the way up. If the receiver shuts down than it would need to go to a service center as it is an internal problem with it. If the receiver does not shut down, turn the volume down, shut the receiver off and connect one speaker and than turn the receiver on selecting the same source as before and raising the volume up. If the receiver shuts down, remove that speaker from the post and connect it to another speaker post to determine if it is the receiver or the speaker itself that is giving you the problem. If the receiver should shut down after moving that speaker you know it is a problem with the speaker or the wiring. If the receiver does not shut down, turn the volume down, shut the receiver off and connect another speaker followed by doing the previous test procedure. Keep adding speakers until you have them all reconnected to the receiver as long as it has not shut off while trying the test procedure. After determining whether it is the speakers or the receiver you would need to bring either to a service center to be repaired. To locate an authorized independent service center, check the dealer and service locator at our website: www.onkyousa.com or www.integrahometheater.com.
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