S
sudheervemana
- Jan 1, 1970
- 0
Hi all,
In my circuit board there is an regulator which gives
3.3v output and this was used by various ic's.when the board was
tested for continuity across the pins ,it was working fine .After a
few testings were done on the board there was a continuity across the
power 3.3v and Gnd.what could be the reason behind this,In my circuit
board all the power pins with 3.3v supply are placed with a by-pass
capacitors and the capacitor other ends are connected to ground.i
think that if any capacitor got fails (gets short circuit) ,then the
power 3.3v and GND are showing continuity.I want to know the shorted
by-pass capacitor on my board.how to find out this capacitor on my
circuit board ,otherwise there is a continuity across 3.3v and GND.
Is there any other method to find the shorted
components on the circuit board by using externally with the bare
board(that does not contains the components and contains only the foot
prints of the respected components ).Please give me your suggestions
to find the continuity across the power and GND in my board and also
clarify me what does an capasitor shows( i mean its state is either
the short or open) when it fails on the circuit board .
Thanks in advance,
With Regards,
Sudheervemana.
In my circuit board there is an regulator which gives
3.3v output and this was used by various ic's.when the board was
tested for continuity across the pins ,it was working fine .After a
few testings were done on the board there was a continuity across the
power 3.3v and Gnd.what could be the reason behind this,In my circuit
board all the power pins with 3.3v supply are placed with a by-pass
capacitors and the capacitor other ends are connected to ground.i
think that if any capacitor got fails (gets short circuit) ,then the
power 3.3v and GND are showing continuity.I want to know the shorted
by-pass capacitor on my board.how to find out this capacitor on my
circuit board ,otherwise there is a continuity across 3.3v and GND.
Is there any other method to find the shorted
components on the circuit board by using externally with the bare
board(that does not contains the components and contains only the foot
prints of the respected components ).Please give me your suggestions
to find the continuity across the power and GND in my board and also
clarify me what does an capasitor shows( i mean its state is either
the short or open) when it fails on the circuit board .
Thanks in advance,
With Regards,
Sudheervemana.