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MSP-FET维修问题

Other Parts Discussed in Thread: MSP-FET

不小心将MSP-FET的VCC_tool与地短接了,烧了Q3的MOS管,换了一个后,测试TP0是3.3V,但是插上电脑后power灯亮一会就不亮了而mode亮了,仿真时识别不了器件,电脑可以识别仿真器,并且CCS也可以检测到,请问怎么维修。这么贵的东西,一个不小心,利尔达又不给维修。。。请教大神。(电路图见附件的168页,和TI官方给的一样)

slau278y.pdf