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2004 Es330 Mark Levinson Amp Won't Turn On

blue11

By blue11
in 92 - 06 Lexus ES250/300/330

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blue11

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This is a Mark Levinson 86280-0W100 amplifier, rebuilt about two years ago by United Radio in New York after it started blowing fuses. Has been fine since.

This week, the amp stopped working, does not seem to turn on. The fuse is good, it's getting 12 volts to the two blue/yellow wires, but no audio.

Does anyone have the wiring diagram or at least the lead identifiers to the two connectors on the amp? I understand it gets a "Turn on" command from the head unit.

Does anyone know if the amp's little internal fan should be going when the amp is on, or does it spin only when it gets warm?

Thanks for any help.

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