NAD 314 silenced

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Has anyone some experience with NAD Integtrated Stereo Amplifiers(314) ? After many years of splendid work my 314 suddenly does not want to do ANYTHING anymore. Excepting the green light is coming on when switched on oterwise not a sound or even a whisper on all inputs. I checked the fuses inside on the board..all ok.
Any ideas ?????

 

[FranZAR]

 

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[LAV]

 

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[CarolynPhelps]

 

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[Family_Dog]

 

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[Family_Dog]

 

[Vaal]

 

[ludo]

 

[Clive Jacks]

 

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[Rsim]

 

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[Rsim]

 

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