Capacitance value?

[z]

I have opened my Sky Digibox which has stopped working
and I am having problems reading capacitor values. For
example, there are many blue blob type capacitors
(ceramic dipped resin I guess) which I can't understand,
for example, one has 221K

I then took it out and measures 1.4nF if I remember
correctly. What does 221K mean?
p.s. it was rated at 2kv - is that a switching psu? anyone
knows how to troubleshoot those?
(panasonic tu-dsb20)

 

[Arlet]

I have opened my Sky Digibox which has stopped working
and I am having problems reading capacitor values. For
example, there are many blue blob type capacitors
(ceramic dipped resin I guess) which I can't understand,
for example, one has 221K

I then took it out and measures 1.4nF if I remember
correctly. What does 221K mean?
p.s. it was rated at 2kv - is that a switching psu? anyone
knows how to troubleshoot those?
(panasonic tu-dsb20)

try google "capacitor codes" ?

 

[z]

try google "capacitor codes" ?

O.k. so what is 221K ?

 

[Arlet]

O.k. so what is 221K ?

The first link on google "capacitor codes" points to
http://xtronics.com/kits/ccode.htm, which says in the first couple of
paragraphs:

"Now, what about the three numbers? It is somewhat similar to the
resistor code. The first two are the 1st and 2nd significant digits and
the third is a multiplier code. Most of the time the last digit tells
you how many zeros to write after the first two digits, but the
standard (EIA standard RS-198) has a couple of curves that you probably
will never see. But just to be complete here it is in a table."

The single letter at the end is explained a bit further down the page.

 

[Eeyore]

I have opened my Sky Digibox which has stopped working
and I am having problems reading capacitor values. For
example, there are many blue blob type capacitors
(ceramic dipped resin I guess) which I can't understand,
for example, one has 221K

I then took it out and measures 1.4nF if I remember
correctly. What does 221K mean?
p.s. it was rated at 2kv - is that a switching psu? anyone
knows how to troubleshoot those?
(panasonic tu-dsb20)

It's the value in pF as follows. The first and second numbers are the first part
of the value and the last digit is the number of trailing zeros.

So 221 = 220 pF

The K is a tolerance letter ( 10% ).

The cap you mention sounds like a snubber cap in a switch mode psu.

Graham