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YAMAHA DSP-AX620 HI FI AMP

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G.v.t.v:
 :unknw: Hi all! Any one got any ideas on above? Fault:-Unit is dead and wont switch on.Standby 5V to micro ok & osc, in chip is working, have checked reset circuit & on switch all seems ok,but it still wont switch on! Me thinks surface mount micro DEAD!! grrrrr!Thanks if you can help.

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