replacement of pv7 power supply capacitor

[jeclk]

to be precise it is the capacitor C2 on the part list: value: 20uf/40uf. 20uf/40uf /500v
this capacitor is no longer used.
so how to make the change?
(perhaps by several capacitors)
but I don't know how to proceed
Thanks for your help.

[admin]

The value is ambiguous? Is it 20uf or 40uf? I would imagine you would want to replace it with the same exact spec that was in there before.

[jeclk]

yes of course the same value on the PV7 part list
it is marked 40uf/40uf/500v
on the capacitor as above.

thanks for your interest

[jeclk]

you also need to know that the capacitor with 6 solder pads

[admin]

Can you post a picture of the cap?

[jeclk]

a stupid question, how to post photos?

[jeclk]

IMG_20230913_153649.jpg (2.49 MiB) Viewed 3028 times

It's good I found it, here are the photos
the 40uf/40uf/500v
the one in front is a 5000uf/25v on the C-J bom
which I replaced with a 6800uf /50v

[jeclk]

I unsoldered the MJE340 regulator into 7812ck
but I didn't take a photo before, to change it.
I would like to know and see which wire comes from the transmitter and which one from the base
-1 towards .15/400v
-1to the phono stage
I attach a photo to see from the tips of the multimeter

IMG_20230913_155336.jpg (3.34 MiB) Viewed 3027 times

[jeclk]

Hello everyone,
I would like to change the 2 capacitors,
but they are no longer made. I would like to adapt 2 recent capacitors but I don't know how to do it.
I put 2 photos original version and adaptation of the 2 capacitors.
could someone help me
THANKS

[jeclk]

https://drive.google
mauvais lien desolé

[jeclk]

alimentaion -conrad-johnson-pv-7.jpg (117.95 KiB) Viewed 2887 times

[jeclk]

PV7 vue alimentation.jpg (128.37 KiB) Viewed 2886 times

[admin]

So it looks like you replaced the original dual capacitors with individual ones. That should work.

Did you change the value of capacitor from the original 40 uF 500 VDC? If so, why?

[jeclk]

Good morning ,
I have difficulty making myself understood.
I haven't changed any capacitors yet.
the photo of the conrad PV7 edit is not mine.
I still have the original 40/40/500v capacitor.
I would like to put the capacitors like the photo on the modification but I don't know how to modify the installation with the double capacitors then connect them in the right place

[admin]

My understanding of dual capacitors (if that is what the original CJ one is) is that it is pretty much just two capacitors in the same body. You should be able to replace it with two equally rated caps (ie 40 uF/500vdc).

In the picture I see some other things being done there including caps/resistors (can't tell from picture) added, but perhaps that was just to free the components from the main board. Can't say. Also, they have a very different rated large cap on the right that they put in so I'm really not sure of how that was modified.

[jeclk]

I found this capacitor for the PV7
original capacitor here are the characteristics
6 poles of which I will need 2 new capacitors in 3 poles
on the label of the original Sprague USA brand capacitor
it is marked: 20/20/40/40/500v
I have the choice of purchasing the 32/32/500v and 50/50/500v values.
what should I do?
THANKS

Condensateurs à double amplificateur électrolytique audio 100 + 100uf, 50 + 50uf, 32 + 32uf, 500V

https://amzn.eu/d/8S86TfZ

[admin]

I'm stretching beyond my electronics knowledge here, but can you substitute the more common 2 pole capacitors? Again, this is really beyond my knowledge base now and I'm worried that 32 and 50 uF is just pretty far off of specs. I don't know what that would mean for operation and safety.

I would maybe recommend emailing Digikey to see what they think about a suitable substitute. I've bought stuff from them for hard to find electronics.

A viable substitute may be something like this: https://www.digikey.com/en/products/det ... 25/6185052

[jeclk]

Condensateur – CE Mfg., 525 V, 40/40/20/20 μF
https://www.tubesandmore.com/products/c ... 40402020-f#

ok I found it, same characteristics.
to see interesting site

by the way thanks for your research

[admin]

Condensateur – CE Mfg., 525 V, 40/40/20/20 μF
https://www.tubesandmore.com/products/c ... 40402020-f#

ok I found it, same characteristics.
to see interesting site

by the way thanks for your research

Much better fit than the previous cap from amazon, IMHO.

[roberto]

Hola. In a power supply, it is very important to have the voltage value the same or more working voltage . The capacitance, if you use a higher value like 50uF instead 40uF, you can do this, but never lower a capacitance value.