usually i have to replace motherboard caps (0805 SMD) ...
the most used (and usually shorted) is the 4.7 uF 25V (HP boards)
i have a lot of donnor boards... and i take some caps (same size) i measure the capacity using 2 different multimeters (when CAPS are removed from board)
when i found a 4.4 or 4.5 uF caps i place 19V at the sides and i watch if they blow...(or maybe just start absorbing some milliAmperes)
i was sopposing that if the caps are not blowing the voltage can be 25 (or in some rare cases 50V) and i use them as a replacement for the bad one.
is this right ? or a 6.3V cap can stay cold at 19V ?
or i need to try with high frequency voltages???
the most used (and usually shorted) is the 4.7 uF 25V (HP boards)
i have a lot of donnor boards... and i take some caps (same size) i measure the capacity using 2 different multimeters (when CAPS are removed from board)
when i found a 4.4 or 4.5 uF caps i place 19V at the sides and i watch if they blow...(or maybe just start absorbing some milliAmperes)
i was sopposing that if the caps are not blowing the voltage can be 25 (or in some rare cases 50V) and i use them as a replacement for the bad one.
is this right ? or a 6.3V cap can stay cold at 19V ?
or i need to try with high frequency voltages???
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