[TechAssist] Re: Aiwa ADV58u amplifier-tuner , no sound

  • From: becyn <becyn@xxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Wed, 24 Nov 2004 19:56:31 -0500

Are amps new to you?
IF you have voltages and no output, the thing is in protect mode which 
kicks in if a dc voltage is dectected on the amp out node. Otherwise, 
the speaker would burst into flames-(not good ;-)

No doubt one (or more)  of the amps have a dc offset caused by shorted 
output transistor, drivers or problem with the differential amp. happy 
hunting...

Jim McVey
McVey Alltronix   
327 Broadway
Newburgh N.Y. 12550

Factory authorized
service for over 20
major brands.
845 561 8383

larry wrote:

>the readout lites, tunes stations, but no sound.
>please , any clues where to start?
>I have plus and minus 45 volts and also 23 volt + and -.
>Larry
>
>  
>

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