Question about Sony HT-DDW740 System
I get a very noticeable hum when I select either the AM or FM input of this tuner. The CD input and other inputs sound clean, so I am wondering if there is any information about a power supply that feeds only the tuner module that could be causing this, ie a bad filter capacitor or voltage regulator. Any suggestions?
On the stanby power supply replace or have replaced C899 with a 100uf 35V capacitor, this capacitor goes bad and produces hum in the supply voltage to the AM FM circuits.
Posted on Dec 21, 2009
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Posted on Jan 02, 2017
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