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3rd September 2008, 07:06 PM
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diyAudio Member
Join Date: Sep 2006
Location: Pleasant Hill, CA
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Marantz 7200: strange distortions
My Marantz 7200 I use for a home cinema theater (it has nice surround sound processor) started to distort as if something is heavily clipping in all channels. I opened it on the bench, looked inside, but did not find any bad solder or something similar. When I connected a signal generator and a dummy load it worked fine. I kicked all boards by a screwdriver, no result.
I put it back and it worked fine for a while, then started to distort again suddenly. What is strange, internal FM radio sounds nice. Any clue? I have no schematics, unfortunately. It has lot of small PCBs soldered vertically and fastened to the rear panel, so it is very hard to troubleshoot...
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