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My Yamaha YHT-791BL amplifier goes off every time I turn it on. How can I fix it?

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Hello,
Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Its usually not a fault that you will see unless somethings burnt up. This is solid state electronics and you dont see this stuff go bad. But in the meantime try disconnecting the speakers and see if it still goes into shutdown and at the same time have a dc multimeter attached to the speaker outputs. If the unit comes on and you dont see any DC at all or very very little B+ on both speaker terminal sets then you may have a defective speaker. If you do see dc then thats why the protections comming on so you dont blow out your speakers.
Also check for cracked solder connection.
Good Luck

Posted on May 26, 2010

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Posted on Jan 02, 2017

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