Yamaha p5000s HELP. amp needs repair

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No fault indicator leds on ? Activity led works ? Do you hear nothing at all... I mean a faint hiss or humming from that channel.


I have two P7000.


Check if there are relays inside and if they click.
Check for correct rail voltages.
Check broken / cold solder on connectors.


Schematics here. Perhaps It can help

http://www.go-gddq.com/upload/2009_05/09050916175650.pdf
 
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