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Yamaha YST-MSW10 subwoofer quits after about 10 minutes
This problem can be solved by either of the following:
1/ Modify the PCBA to prevent the auto shut off feature from working. This is done by adding a 20k ohm resistor across pins 1 & 2 on the timer IC6. This resistor will prevent the timer from turning off the amp. To do this, unplug the amp. Remove the 8 screws on the perimeter of the rear of the amp. Carefully remove the rear plate. Disconnect the speaker wires at the speaker and the front panel connection on the main board. Locate IC6 on the bottom of the main board. Solder a 20k ohm resistor (1/4W) across pins 1 & 2. Pin 1 and Pin 8 are noted on the board. Be sure to insulate the leads of the resistor to prevent contact with the board. See picture. Re-assemble in reverse order.
2/ Some 5.1 channel amps allow independent control of the volume for the subwoofer in their setup. Check your amp to see if you can raise the signal level going to the subwoofer to prevent the amp from shutting off. You can then dial back the volume of the subwoofer using the volume control on the front.
on Mar 13, 2020
Y adapter to speaker subwoofer
Well, I solved the problem this way, after having gone into a loop of discussionwith "bunnydog." I took the cable set back to the retailer and then I trashed the subwoofer. Problem solved. I have no further need of your assistance.
on Aug 31, 2008
ok the only issue i see causing the problem if stereo headphones work directly on the laptop is that you are running stereo to mono and maybe back again. it did occur to me as well... why are you using a Y plug.
on Aug 30, 2008
How to reset yamaha R-N402 power protection circuit
Remove the short that is causing the protection to engage, then power cycle, assuming it's a short circuit protection. If it's going in to thermal protection, then shut the receiver off and let it cool. If all speaker wires are disconnected and the unit is cool to the touch but still appears to be in protection mode, likely one of the output transistors has failed an will need to be diagnosed and replaced. Don't neglect to check the ESR of the electrolytic capacitors if you find a failed device internally.
3 days ago
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