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Old 26th November 2015, 03:07 PM   #1
diyAudio Member
Join Date: Jun 2008
Default Marantz 4430 no sound

This unit came to me with the compliant that there was no sound.
I plugged it in and turn on the radio and it there is sound, FM and AM
I then plug in an Ipod to check Aux and there is no sound. Change it back to FM and no sound.
When turning the unit on the click of the relay can be heard, but still no sound on any functions.
The +/- 35 vdc is present on filter caps. Cleaned pots so far but that's it.
Found a schematic of the power amp off of another thread , I 'll try to post that.
I was wondering if anyone has any suggestions on where to go from here?

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