Re: A13TA Transistors-odd readings on DMM
AG, thanks for that link. I just assumed that A13TA was the device type. I see also that the encapsulation is described as TO3P, not TO220. Sorry for misleading everyone on two counts! Al, this PSU is out of a Dr. Dre 'Beatbox'. The equivalent of tha 'Powergood' circuit has a trigger line which is supposed to be momentarily grounded when the on/off button is pressed. I can only check that by temporarily shorting the pin on the PSU PCB to earth. If the PSU, once I have refitted the components I've ben checking, fires up, then the fault is elsewhere. Oh well, at least I've learned a bit more about ATX PSUs than I knew before even if I've been looking in the wrong place for the fault!
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