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My sansui g-7500 is burnig the transistors of power

There are no audio and burning the power transistors

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Well that means it is done. There is no magic button to stop this I am afraid. You could replace the board but cost wise just easier to buy a new one.

Posted on Dec 17, 2008

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It is possible, but nlikely that the protection circuit is bad. More common are shorted output transistors or defective driver stage transistors. This should not be a difficult repair for anyone familiar with audio amps. Unsolder/remove Q22 and Q23 and measure the voltages at each of the 3 pads per transistor and post them here.

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