Question about Sharp 27C-240 27" TV

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Aiwa component audio problem

Hi, im mar can you help me with my aiwa component... it has no sound at all and no sound level in the display and the fan doesn't work too... pls. help me what to do, and what parts or components i have to checked and replaced... in the amplifier section it has two large IC, STK 490-040S and 490-310... hope to hear from your brilliant idea and opinion experts of electronics troubleshooting... mar

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Have you checked any fuses? from the power supply and out to the speakers? if they are ok, and I guess its the preamp section.

Posted on Jan 25, 2008

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Posted on Jan 02, 2017

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DEAR

I UNDER STAN YOUR PROBLEAM VERY WELL,
PL CHECK FOLLOWING POINT'S

CHECK MUTE SIGNAL PATH WITH YOUR MAIN AMPLIFIER
CHECK MAIN AMPLIFIER STK BY REPLACING IT
CHECK MAIN SPEAKER'S.
CHECK BIASING CIRCUIT WITH STK INPUT
CHECK HEAD PHONE CONNECTOR BECAUSE IT GIVES OUT PUT TO MAIN AMP.

THANK YOU

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