The first thing would be to swap the left and right phono inputs to prove that the problem is the amp not the cartridge.left side of phono after a while becomes very fuzzy
I swaped the left and right phono inputs,sameThe first thing would be to swap the left and right phono inputs to prove that the problem is the amp not the cartridge.
You can download a service manual here for free.
https://www.hifiengine.com/manual_library/marantz/4430.shtml
Thank youI swaped the left and right phono inputs,same
I ordered a rebuild kit for the 700 board.hope that works. thanksI’m not familiar with this particular model, so any advice I can give would be generic.
Can you remove the cover and inspect the boards? Can younsee if anything in the phono stage is getting warm or hot compared to the other?
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