Where do you all buy CAPs?

[toolguy]

Hello,

I am new, and have a few questions about CAPs for my TV resto if someone could help me.

Now I usually buy from Mouser or GPE for my pinball and arcade games, but my 1955 GE has such low values, I can't find all of them to buy on line.

I found this site http://www.tubesandmore.com/products/C-U-630V which has most of what I need but I have a question about the site above and still a couple other questions.

On the site above, the CAPs are listed in V for volts I know and up to 630 but my CAPs all state VDC. I am 99.99% sure this means Volts DC.
Seriously though, can I use the above 630V caps in place of the ones that state VDC?

Two of my caps state VW on them i.e. 1 MFD 50VW. What is VW? Are these type oriented with a + end, or no?

These are the caps I'm having a hard time sourcing:

.2 / 200V
.05 / 200V
.004 / 600V
.0039 / 600V
470 / 500V
.008 / 1000V
.01 / 1000V
10 MFD / 25VW
1 MFD / 50VW

If anyone can please help with my questions, I'd appreciate it!

[radiotvnut]

Yes, the new caps are rated at 630 volts DC and will work fine in your set. WV or VW means "working volts". That's the amount of continuous voltage that the cap can safely stand.

Do not use 630 volt caps to replace the two 1000 volt caps. For those, you'll need to order something that's rated at least 1000 volts.

[M3-SRT8]

Try Just Radios. Great source for tubular caps, and many other items.

Has 630v and 1000v rated tubulars.

[toolguy]

Originally Posted by M3-SRT8

Try Just Radios. Great source for tubular caps, and many other items.

Has 630v and 1000v rated tubulars.

OK great, thanks for the site tip!

[toolguy]

Originally Posted by radiotvnut

Yes, the new caps are rated at 630 volts DC and will work fine in your set. WV or VW means "working volts". That's the amount of continuous voltage that the cap can safely stand.

Do not use 630 volt caps to replace the two 1000 volt caps. For those, you'll need to order something that's rated at least 1000 volts.

OK thanks! Just want to verify things because I wil be replacing 40 of them and while this is not my first time doing caps, it is with TV's and I dont want to do one wrong and then plug it in for some disappointment.

[radiotvnut]

The 1uf/50V, the 10uf/25V, and the 470uf/500V are very likely to be electrolytic capacitors and if that's the case; then, yes, they are polarized and the new capacitors will need to be installed correctly or you will likely experience some unwanted excitement.

There should be markings on the old electrolytic capacitors that indicate which terminal is negative (-) and which is positive (+). The new capacitors will have to be installed with the same polarity as the old ones.

The newer electrolytic capacitors usually have the negative terminal indicated by an arrow with a "-" symbol inside the arrow.

In most cases, anything under 1 uf will be a non-polarized, non-electrolytic cap and it won't matter which way the cap is oriented in the circuit.

There are exceptions; but, most caps that are 1 uf and above will be the polarized electrolytic type and they must be wired in correctly.

Often, a new capacitor won't quite match the value of the old cap. It's hard to find modern day 50 uf capacitors; but, a modern 47 uf cap will work just fine in it's place. Same goes for using a 33 uf in place of an old 30 uf and using a modern .047 uf in place of a .05 uf, etc.

It is perfectly OK to use a replacement capacitor with a voltage rating that's higher than the original capacitor; but, it is never OK to use a replacement capacitor with a voltage rating that's lower than the voltage rating of the original capacitor. For example, you can use a 630V cap to replace one that is rated at 100V, 200V, or 400V. However, it's not OK to use a 630V cap to replace one that was rated at 1KV and it's not OK to use a 450V cap to replace one that is rated at 500V.

[toolguy]

Originally Posted by radiotvnut

The 1uf/50V, the 10uf/25V, and the 470uf/500V are very likely to be electrolytic capacitors and if that's the case; then, yes, they are polarized and the new capacitors will need to be installed correctly or you will likely experience some unwanted excitement.

There should be markings on the old electrolytic capacitors that indicate which terminal is negative (-) and which is positive (+). The new capacitors will have to be installed with the same polarity as the old ones.

The newer electrolytic capacitors usually have the negative terminal indicated by an arrow with a "-" symbol inside the arrow.

In most cases, anything under 1 uf will be a non-polarized, non-electrolytic cap and it won't matter which way the cap is oriented in the circuit.

There are exceptions; but, most caps that are 1 uf and above will be the polarized electrolytic type and they must be wired in correctly.

Often, a new capacitor won't quite match the value of the old cap. It's hard to find modern day 50 uf capacitors; but, a modern 47 uf cap will work just fine in it's place. Same goes for using a 33 uf in place of an old 30 uf and using a modern .047 uf in place of a .05 uf, etc.

It is perfectly OK to use a replacement capacitor with a voltage rating that's higher than the original capacitor; but, it is never OK to use a replacement capacitor with a voltage rating that's lower than the voltage rating of the original capacitor. For example, you can use a 630V cap to replace one that is rated at 100V, 200V, or 400V. However, it's not OK to use a 630V cap to replace one that was rated at 1KV and it's not OK to use a 450V cap to replace one that is rated at 500V.

Thanks again for the knowledge! I will certainly look for the + indication on each cap before I remove it.

[cwmoser]

I too like Just Radios.
I especially like their Excel Spreadsheet you order your
capacitors on. Easy.

Carl

[toolguy]

Originally Posted by cwmoser

I too like Just Radios.
I especially like their Excel Spreadsheet you order your
capacitors on. Easy.

Carl

I bookmarked the site and will def check it out!

[Electronic M]

That 470/500v cap could be a mica rated in Pico-Farads ....Lytics that big weren't that common back then in TVs.

[toolguy]

Originally Posted by Electronic M

That 470/500v cap could be a mica rated in Pico-Farads ....Lytics that big weren't that common back then in TVs.

Yes it just might be. I spot checked them looking at the chassis and then the parts pic in the manual. I should re-check that one on the chassis and possible take it off the list.

[teevee]

Mouser electronics is a favorite source for capacitors, you can adjust your quantities for price breaks..

[M3-SRT8]

Originally Posted by teevee

Mouser electronics is a favorite source for capacitors, you can adjust your quantities for price breaks..

Mouser is good. Fast, too. Order it on-line and 1-2 days later it's at your doorstep. I buy tubulars from them, also.

But Just Radios has the old "Pre WW2" numbered tubular caps in modern film construction. You know, a .050 rather than a .047. Makes no difference electronically, but I like the "exact" match.

[M3-SRT8]

Another good thing about Mouser is their Search Engine. It takes some getting used to, i.e., capacitors are found initially under "passive components," but once under way is very selectful.

You can locate those real nice Nichicon and Panasonic 105 degree C axial and radial long life electrolytics. They come in narrow diameters, perfect for restuffing cans.

[vts1134]

Just Radios is a great place to find some more obscure capacitors but be aware that shipping time takes up to 5 weeks as they are from Canada. Be sure to select Air Mail as your shipping option or be prepared to wait an eternity for your order.
For my every day ordering I use wjoe.com. Joe has a good selection and shipping is very fast.