400 volt capacitor how to know its leckage or damaged

400 volt capacitor how to know its leckage or damaged



one day my own digital satellite reciver not working

itry but not fix

i went to technican and he only change the 400 volt capacitor

my capacitor was like new one


my question is how to know its leckage


i have analog and digital meter

which is best for capacitor

u can check that using the analog multimeter.

If it's leaky it will almost certainly have gone S/C, the high voltage across it will pass high current through the leaky capacitor until it goes S/C.

However, it's unlikely to be leaky or S/C (or you would most probably see physical damage), it's most likely O/C or high ESR - it's a common failure mode in these types of capacitors.

I've also seen a number 'exploded', presumably due to mains surges? - all of them have been in receivers from Spain, where the electricity supply seems rather 'third world' :lol:

Nigel Goodwin said:

I've also seen a number 'exploded', presumably due to mains surges? - all of them have been in receivers from Spain, where the electricity supply seems rather 'third world' :lol:

Click to expand...

why did you have to say that..
I have to go out there in 6months with my 150kW converter and really dont want the hassle of main-surges

Styx said:

Nigel Goodwin said:

I've also seen a number 'exploded', presumably due to mains surges? - all of them have been in receivers from Spain, where the electricity supply seems rather 'third world' :lol:

Click to expand...

why did you have to say that..
I have to go out there in 6months with my 150kW converter and really dont want the hassle of main-surges

Click to expand...

Oh dear 8)

I hope it's well protected?.