CTX CVP-5468NI picture increased width then shrank

[luRaichu]

I pulled C322 and C427 today but the cheap LCR-T4 I bought only measures their capacitance, not ESR.
C322 rang up as 50pF on both the LCR and my multimeter!
It should be 220nF. The code on the package is 224J which means 22 x 10^4 = 220000pF with 5% tolerance. The second line says MP400 which I assume means rated 400V DC.
https://files.catbox.moe/7prbnh.jpeg
I’ll find a replacement mylar cap on DigiKey but let me know if there are any special considerations to be made.

Here is C427. Measured capacitance was close enough to 330pF.
https://files.catbox.moe/w1rpj1.jpeg
Should I replace it? I still don’t know its ESR.

[vol.2]

Originally Posted by luRaichu

I pulled C322 and C427 today but the cheap LCR-T4 I bought only measures their capacitance, not ESR.

Are you sure? I have a similar cheapo tester that has ESR on the screen when I test for capacitance.

C322 rang up as 50pF on both the LCR and my multimeter!
It should be 220nF.

yep it's bad.

Here is C427. Measured capacitance was close enough to 330pF.

I can't see your picture. It's a bad link for me.

I believe that 330J is a 33pF code (33 for the digits and "0" for the number of places). What does it measure?

Also, the cheapo testers sometimes don't go down very low, and they definitely can't go up very high. So it might be outside of it's limits.

[luRaichu]

Originally Posted by vol.2

Are you sure? I have a similar cheapo tester that has ESR on the screen when I test for capacitance.

I put a 2200uF electrolytic cap in my tester and it measured the ESR of that. I don't think the ESR test works for caps in the pF range.

Originally Posted by vol.2

I can't see your picture. It's a bad link for me.

Works fine here... It's just a picture of a film cap that says 330J and S50F.

Originally Posted by vol.2

I believe that 330J is a 33pF code (33 for the digits and "0" for the number of places). What does it measure?

317pF. Again, the formula is [first two digits] multiplied by 10 to the power of [third digit]. 10 to the power of 0 is just 10 so 33 x 10 = 330 (which is the full three digits anyways). If it was 33pF, why wouldn't they just save ink and write only "33"?

[vol.2]

Originally Posted by luRaichu

317pF. Again, the formula is [first two digits] multiplied by 10 to the power of [third digit]. 10 to the power of 0 is just 10 so 33 x 10 = 330 (which is the full three digits anyways). If it was 33pF, why wouldn't they just save ink and write only "33"?

Okay, nevermind. I got myself confused about it because we were talking about pF. 330J is 33nF, which is the same thing as 330pF.