Me either. Modular design is kind of annoying, because you have no access to the components that have failed on the inside. However, having said that, I'm believing there may be an issue with the daughter board. I'm suspecting the uPA68H IC, which is a dual FET transistor package. This forms the LTP (long tail pair) at the input stage. If one is shorted, then that could be the reason we have DC on the output. When I can be bothered, I will investigate this avenue.
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