Luxman m-03 m03 strange fault.... - diyAudio
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Old 27th February 2008, 04:09 PM   #1
babbo is offline babbo  Italy
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Default Luxman m-03 m03 strange fault....

My luxman m-03 has a strange behaviour. It sounds good, but when it goes hot (after about 30 mins) it sounds dull, i.e. it 'cuts' high frequencies on both channel. Any help?

It's a problem of thermal runaway...but what check?

I don't know if the idle bias is correct.
Does it'd be the oxidized contacts of the output relays?

Any help appreciated!!
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Old 28th February 2008, 03:19 AM   #2
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Check/set bias, replace the relay.
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