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no output on a  PM63 marantz
no output on a  PM63 marantz
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Old 23rd June 2004, 04:43 PM   #1
toirem is offline toirem  France
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Join Date: Jun 2004
Location: paris
Default no output on a PM63 marantz

I found an amplifier marantz PM63 but no sounds
It seems to be clear, no burned composants and so on but no output
I want to test the different composants but i have no schematics in order to help me founding the roblem
If somebody got the schematics of this amplifier, it will be so glad to send it to me

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Old 24th June 2004, 08:09 AM   #2
hjelm is offline hjelm  Sweden
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Join Date: Nov 2003
Location: Västerås
Hi toirem.
Do not know if it is the same as in my pm66 but my output relay didn't pull.
This was due to a burned resistor in the supply for the protection circuitry. If you have a relay and don't hear any click on turn on then check the supply voltages, i think it was a +24 volt that was missing.
Do not know if this is a standard error, i think mine was caused by my daughter excessively turning on and off the amplifier.
The resistor didn't appear to be burned which was good in one way since i didn't have any schematic so i wouldn't know its value if it would have looked like a piece of coal.
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