Hi all,
I got this above mentioned subject loudspeaker for repair.when I drive 100hz sine wave only upper part of it shows in the output. But when I heat the area near drivers I am getting good sinewave output. I checked all the transistors and resistors and everything seems good. I also checked if vias is trouble and I did not see any broken trace. What could be the reason and how to solve this. Thank you.
I got this above mentioned subject loudspeaker for repair.when I drive 100hz sine wave only upper part of it shows in the output. But when I heat the area near drivers I am getting good sinewave output. I checked all the transistors and resistors and everything seems good. I also checked if vias is trouble and I did not see any broken trace. What could be the reason and how to solve this. Thank you.
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