I have continous noises whistles that cuts the sound of music and after few seconds music start again, also one channel the tweeter sounds with a high frequency sound like frying eggs if I change the amp output terminal to speakers the sound change to the other channel, any help woul be really appreciate. Measured the gain with a dummy load & it's OK, also measured DC offset at the output terminals resulting near 0Vdc so both OK.
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Attached pics, visual inspection says nothing burned or badly connected.
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