[TechAssist] Re: Sanyo AVM2752 weird audio squeal
- From: John <maintv@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 30 Jan 2002 09:43:21 -0800
Hello. Check C231, C232,C233 and C241 between the upc and the audio
control IC (IC251). The output of the upc for bass, treble and volume are
pulse width modulated and need these low pass filters to make a DC control
voltage to the audio IC. John.
Terry Joseph Hutchison wrote:
> Sure could use a pointer on this one. When turned on audio is fine
> BUTTT when volumn up or down on front panel or with remote is used I can
> hear a digital squeal(pulsing) like the signal being sent and then a
> high pitched squeal(steady) is heard thru the speakers. Thinking
> processor but don't know how to confirm it. Any help is appreciated.
> Thanks Terry
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