Ceramic capacitor 331K. Value??

Jan Dupont · 10th June 2003, 06:30 AM

One of my TV’s, a Philips 28PW6322/11, crashed with a loud “Bang” the other day.

I found that the main fuse (4A) was blown, one of the rectifier diodes was shorted, and one small blue ceramic cap marked 331K 1 KW was “exploded”.

As I am normally not into TV’s, I am not sure about the precise value of the cap.
As I recall, 331K means 330pF x 1000 = 330nF….

Is this correct?????

By the way!
Has some of you experienced the same problem????

mirlo · 10th June 2003, 07:27 AM

So I think it is probably 330 pF, +/- 10%

http://www.montek.com/tutorials/cap_codes.html

But, that begs the question ... what would a 330 pF cap be for in the power supply. A snubber I would guess, but it seems like a small value for that purpose.

dhaen · 10th June 2003, 07:40 AM

Yup, 331 = 33*10^1

Jan Dupont · 10th June 2003, 08:45 AM

Thanks a lot for the help

samcase · 7th June 2009, 07:53 AM

I guess this capacitor is used against reverse current. If the the diode was shorted, it may explain why this capacitor was blown.
I had the same doubt about the value...I really thought it was 330nf.

10th June 2003, 06:30 AM	#1
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Ceramic capacitor 331K. Value?? One of my TV’s, a Philips 28PW6322/11, crashed with a loud “Bang” the other day. I found that the main fuse (4A) was blown, one of the rectifier diodes was shorted, and one small blue ceramic cap marked 331K 1 KW was “exploded”. As I am normally not into TV’s, I am not sure about the precise value of the cap. As I recall, 331K means 330pF x 1000 = 330nF…. Is this correct????? By the way! Has some of you experienced the same problem???? __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

10th June 2003, 07:27 AM	#2
mirlo diyAudio Member Join Date: Jul 2002 Location: San Diego	I think K is for tolerance ... So I think it is probably 330 pF, +/- 10% http://www.montek.com/tutorials/cap_codes.html But, that begs the question ... what would a 330 pF cap be for in the power supply. A snubber I would guess, but it seems like a small value for that purpose.

10th June 2003, 08:45 AM	#4
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Thanks a lot for the help __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

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10th June 2003, 07:40 AM	#3
dhaen diyAudio Moderator Emeritus Join Date: Jun 2002 Location: U.K.	Yup, 331 = 33*10^1

7th June 2009, 07:53 AM	#5
samcase diyAudio Member Join Date: Apr 2009	I guess this capacitor is used against reverse current. If the the diode was shorted, it may explain why this capacitor was blown. I had the same doubt about the value...I really thought it was 330nf.

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