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<div class="">Just some comments and more ideas for you……</div>
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<div class="">I would focus on the <span style="font-size: 11px;" class="">TLV320AIC23B. This is the analog chip that is generating your sound. Inspect the soldering around this chip looking carefully at the ground connections. Also look at the bypass caps
for this chip to be sure they look soldered properly and have no damage.</span></div>
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<div class=""><span style="font-size: 11px;" class="">You mentioned that you still hear the noise with MUTE selected. I believe this indicates the source of the noise has to be from the TLV320AIC23B. A poor ground on this chip would likely yield the condition
you mentioned. Bad soldering or a internal die bond wire issue may be causing the problem. If you have a issue with bypass capacitors, C46, or the VMID cap C34 you may be experiencing switching noise in the analog audio system. The TI data sheet may also offer
some ideas on the problem.</span></div>
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<div class=""><span style="font-size: 11px;" class="">Hope you are able to find the issue.</span></div>
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<div class=""><span style="font-size: 11px;" class="">73,</span></div>
<div class=""><span style="font-size: 11px;" class="">Bob N5BRG</span></div>
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