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Yamaha Sub-Woofer -Model YST-SW320

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RaimonAu

New Member
Hi Guys......Sub is switching itself off during quite passages of music or movies. Also makes a large thump when switching on or off !!...... Can anyone shed some light on what the cause maybe ?......Cheers RaimonAu
 

crutschow

Well-Known Member
Most Helpful Member
Is this new behavior in the operation of the sub?
I would think the two problems are unrelated.
So the sub has no switch to shut off the automatic-off mode?
 

Tony Stewart

Well-Known Member
Most Helpful Member
Ther must be leakage in a large E-Cap or input stage transistor causing a large DC offset and some protection circuit detecting the DC offset.
 

RaimonAu

New Member
Thanks Tony ..... I'll begin my diagnosing along those lines .....It seems I have 2 faults possibly at play here......Cheers Again Raimon
 
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