Anyone know this KEF part?

[Cloth Ears]

I borrowed a friends KEF PSW2000 subwoofer to find out why it powered on (green light) but produced no sound.

I'm not sure what the U8 chip is, as it seems to have been obliterated after the green cap vomited all over it!

Can anyone tell me what 224K means on the capacitor?

 

[big jim]

220n

jim

 

[Cloth Ears]

Cool, because that's the right size for the cap. Any idea where the K comes from, or is that one of those "lost in time" things like mF for microfarad (and MF for Milifarad) in the US?

 

[richie00boy]

K=10% tolerance
J=5% tolerance

 

[justblair]

This site has a usefull Calculator
Electronics 2000

Though this site I find more usefull, cause I can never remember the scientific notation. Fortunately my GF is a sciency type. She can do the conversions in her head

Transtronics

 

[stoolpigeon]

These subs had a problem with the speaker relay failing.

IIRC it is blue with a silly name like "Lucky Sky".

 

[Cloth Ears]

These subs had a problem with the speaker relay failing.

IIRC it is blue with a silly name like "Lucky Sky".

Well, from the picture (in post #1), it looks like the cap may be to blame. I won't be fixing it, I was just looking for the problem. Now that I've found it I'll let him decide what to do with it...