Question about Amplifiers & Preamps
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!
Check R803 and R804!!! They must be 0.33 Ohms. When they are more check the capacitors.
Posted on Apr 27, 2008
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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