Question about Marantz MM9000 5-Channel Amplifier

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Marantz mm9000 has died

My m9000 has stopped working. I can hear the solenoids click when I power it up but there is no output. Also, the power and standby lamps fail to come on. I replaced the internal fuses as new. There is no sign of burning or any burning smell whatsoever. Any ideas?

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The main power transformer may not have the correct voltages coming out of it. I would check the output volts at the terminals. I would also check the out puts from the solenoids.
GOD LUCK
BIG RED

Posted on Jan 26, 2008

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MM9000 where the reley clicks in is most likely due to bad solder on input RCA board and output terminal board. Easy to fix.

Posted on Apr 17, 2016

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Sometimes you wont smell anything funky.
If the outputs are powered by big module ICs , chances are that one or both have failed.

First things to check are all the speakers being properly connect ( AT BOTH ENDS)

How would you know if the transformer voltages are ok unless you had a service manual?

Posted on Mar 17, 2008

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