K4600 cap value in question

VectorJunkie

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Last night I capped the K4600 chassis that came in my Qix. I had all of the cap values on hand thanks to Bob Roberts bulk cap kit. :cool2: Anyway, I hit C633 on the main chassis PCB. Now most of the newer caps are significantly smaller than the old ones. However, this one was way off from the normal size delta. So I double check the value in the manual in both the parts list and schematic. The cap reads 2.2uF (K) at 50V. Is that supposed to mean 2200uF at 50V? OR does the (K) signify something else special about the cap? The manual didn't have the little identifier for the cap indicating it was a special part either.

Anyway, the picture is looking pretty good. I would just prefer to replace the cap if possible. The monitor still has a slight throbbing (very subtle expansion and contraction) to the image that I need to dig into.

Thanks,

-VJ
 
C633 is a 2.2uF 50v cap. The "K" is an indicator used on capacitors AFTER the uF symbols as a way to indicate tolerance without taking up a lot of space. In this case, the "K" refers to a tolerance of +/-10%...
 
C633 is a 2.2uF 50v cap. The "K" is an indicator used on capacitors AFTER the uF symbols as a way to indicate tolerance without taking up a lot of space. In this case, the "K" refers to a tolerance of +/-10%...

Thanks Mod! I did some searching on the net, but I kept finding every other type of capacitor coding scheme. :)
 
Don't forget that's a bi-polar (non-polar) cap!!!

Thanks for pointing that out. I totally missed the "B.P." in the schematics since it was on the other side of the cap symbol from the values. I guess this all explains why the sizing was off so much between the BP and tolerance.

-VJ
 
Thanks for pointing that out. I totally missed the "B.P." in the schematics since it was on the other side of the cap symbol from the values. I guess this all explains why the sizing was off so much between the BP and tolerance.

-VJ

IIRC it is also high freq.

I have the correct one if you need it.
 
2.2uF 50v [BP] is what it should say

Understand the BP and even found it on the schematic, but is there any identifier on the cap to correspond with your "high frequency" comment? Or is the reason you have BP caps is for high-frequency designs? I'm just trying to understand so when I run into these I know how to lookup and find the right replacement. :)

Thanks,

-VJ
 
E Lutz brought it to my attention that it is supposed to be high freq. I don't have the answer why, he might.

The easiest way to tell is the sheer size of that cap.....it's 8-10 times the size of a "regular" BP cap of the same value. I know modern caps have grown slightly smaller with technology, but not that much. Modern high frequency BP caps are still huge....campared to their non-high frequency counterpart. If you can find data sheets for the manufacture of that cap....find the data sheet that matched those seemingly ramdom letters/numbers stamped on it...you'll find it's a high frequency cap (or whatever they were calling it 30 years ago).

Edward
 
I do not test caps, it is not worth my time to do so. If a cap is suspect, it gets replaced.

I was asking if you check to see if it is within 10% tolerance of 2.2uF since that is a 20% tolerance part and the original is 10%. That's all.
 
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