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Sony TA-F210 amplifier no sound

Hi i have a sony TA-F210 , with no sound. The power is ok. I opened it and checked some things but didn`t find something wrong yet I am a beginner in electronics. I checked the power on the driver ic`s and it`s not good. its very low 2 volts. The power rectifier and power controller ?c`s are working (7815 and 7915). The relais works also. I don`t know why the driver ic`s get very low voltage. But i`m only a beginner, i am stuck now. Anyone has a solution or tip? Thanks!

Posted by Anonymous on

  • Anonymous Oct 13, 2007

    i let you know if i find a solution :)

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2 Answers

Anonymous

Check R803 and R804!!! They must be 0.33 Ohms. When they are more check the capacitors.

Posted on Apr 27, 2008

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Bring data sheet of this ic from the net-check supply voltage(vcc or vdd)-check ground.apply audio signal and test if it is present in input pins after that check your signal in output pins.have a visual inspection around the ic for burnt resistors or bad capacitor. if every thing is fine replace the IC.

Posted on Mar 11, 2008

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