Do you have receive? If so you might have blew the voice chip. If you don't have receive or transmit you most likely blew those final transistors.
I will be on here if you need further discussion of this. Feel free to ask questions.
To test your voice chip plug an external speaker into the external speaker port and switch your radio to "PA." Now key the mic. Do you hear yourself? If so your voice chip is good. Your final transistor are more than likely the culprit.
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