Marantz 2330b report - diyAudio
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Old 4th February 2009, 01:05 AM   #1
diyAudio Member
Join Date: Mar 2004
Location: southern ont
Default Marantz 2330b report

I can't believe how slow I'm getting back to old projects. I aquired an old 2330b that had been gathering dust in an older tech's garage. He said that the output transistors were gone , yes , they sure were. I replaced them with MJ 15024/25 after recommendations from the forum. Receiver fired up but one channel ran hot. Put it back on a shelf for a few years and decided last week to repair it or sell it. The problem was traced to Q708/Q738 where the idle current is set. Replaced and problem solved. Runs cool and sounds great. Curiously the driver transistors were all fine, first time I've seen this.
I just posted this if anyone else runs into the same problem. I have gleaned so much help from this board over the years.
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