I am involved in the repair of electronic devices and normally have good diagnostics (i.e. software to test a board and flag up faults in certain areas of the board), but I have some complex boards (200+ IC’s, 200+ resistor networks etc!) that are known to be faulty but other than that there is absolutely no indication where the fault is. Other than the usual clocks/ resets/ voltage levels can anyone suggest how to proceed?! Thanks, John.
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