At 03.06 2011.11.11, you wrote:
>On 11/11/2011 12:44 PM, peter green wrote:
>>> In any case, I'd love to hear people's experiences with finding
>>> shorts/defective components and suggestions about tools to isolate
>>> (usually) a defective component.
>> My technique is to set up a bench supply with a current limit of 1A and
>> a voltage limit of a couple of volts and use it to apply a current
>> through the short.
>>
>> I then set a multimeter on it's most sensitive voltage setting and use
>> it to follow the current arround the board.
>I've taken all the expensive parts off a board in the past then hooked=20
>vcc to a car battery.
>
>Those tantalum caps explode good when they are shorted and have plenty=20
>of current available.

My last tantalum experience was a nice candle, which was OK for me to
stare at. Unfortunately, when the candle was blown, the light was not:
the PCB had now a nice hole in it, that's why I was still seeing the light.

--=20
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