Failure event observed during analysis.Final analysis found that upon opening the ac power adapter, inspection revealed that there were burnt components on both sides of the main pcb.Inspection of the opened transmitter revealed that there was no damage to the main pcb or to its¿ inner housing.The original ac power adapter was replaced to test the transmitter with the ac power adapter.The unit was then plugged into a working ac electrical wall outlet and the power on function was performed successfully.The test revealed that the burnt damage to the original ac power adapter was the cause of the no power issue.As a result, we can conclude that the transmitter was hit by a high current flow through the ac wall power outlet into the ac power adapter, thus damaging its¿ main pcb.
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