Silver Seven's Capacitor change

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BrianT
Pair of Silver Sevens
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Silver Seven's Capacitor change

Post by BrianT » Sun Apr 15, 2012 1:29 pm

My set of Silver Seven's developed a loud pop (really loud) when I turned the amp off.
Even with the the level control turned all the way down and the pre amp turned off.

As i did not want to damage my speakers, I had to get it taken care off ASAP. Quick phone call to Bob
Bob gave me a couple of things to check out, one of them was a couple of caps that ground out the 660vdc B+ line.

So after checking them i found one was weak, time to change the caps. There are 3 of these caps in each amp so I ordered
6 x Jensen Audio Grade 47uf 450vdc caps. ( originals where Mallory (date code Sept 1989) 50uf 450vdc)
Chris at Parts Connexion told me the slight difference in values would not matter.

Due to the large size of the case, it turned out to be a very easy job, 30 mins per mono block.

After a quick test, all works fine. No pop's now \:D/ \:D/ \:D/

Brian
Attachments
IMG_2238.JPG
Inside a Silver Seven
IMG_2238.JPG (167.35 KiB) Viewed 4061 times
IMG_2239.JPG
Old Caps
IMG_2240.JPG
New Caps
IMG_2243.JPG
Pair all done
IMG_2244.JPG
Right Hand Cap installed
IMG_2245.JPG
Splice, as leads not long enough
IMG_2246.JPG
Testing the amp
IMG_2246.JPG (180.03 KiB) Viewed 4061 times
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kingman
(pair of) SILVER-7 TUBE AMPs
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Re: Silver Seven's Capacitor change

Post by kingman » Sun Apr 15, 2012 2:04 pm

Nice work Brian!!! =D>
In reality, it only matters what it sounds like to YOU!!!

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engtaz
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Re: Silver Seven's Capacitor change

Post by engtaz » Sun Apr 15, 2012 2:27 pm

Congrats on a great job.
engtaz


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Zoot Horn
SILVER-7 TUBE AMP
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Re: Silver Seven's Capacitor change

Post by Zoot Horn » Sun Apr 15, 2012 2:51 pm

Nice caps and nice work there Brian. =D>

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Martin1970
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Re: Silver Seven's Capacitor change

Post by Martin1970 » Sun Apr 15, 2012 3:33 pm

Perfect work, as per your norm.
Did you find yourself saying, "Holy crap! I'm replacing parts in a Silver Seven."
I'd have been nervous as hell.
Carverfest 10: Celebrating the life of our TNRabbit

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kingman
(pair of) SILVER-7 TUBE AMPs
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Re: Silver Seven's Capacitor change

Post by kingman » Sun Apr 15, 2012 3:47 pm

Martin1970 wrote:Perfect work, as per your norm.
Did you find yourself saying, "Holy crap! I'm replacing parts in a Silver Seven."
I'd have been nervous as hell.
Ditto here Martin....my hands would have been shaking too much to do it.. :lol:
In reality, it only matters what it sounds like to YOU!!!

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BrianT
Pair of Silver Sevens
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Re: Silver Seven's Capacitor change

Post by BrianT » Sun Apr 15, 2012 4:51 pm

Martin1970 wrote: Did you find yourself saying, "Holy crap! I'm replacing parts in a Silver Seven."
I'd have been nervous as hell.
Martin

No I was not nervous, it was a lot easier working inside them than working on the Carverfest Amp's
Due to there age, I think I will be replacing a few more cap's over the next few years.

Thanks for the positive comments on my work.

Brian
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mbskeam
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Re: Silver Seven's Capacitor change

Post by mbskeam » Sun Apr 15, 2012 6:12 pm

nice job....
glad you got it working.
Mbskeam

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MRHP
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Re: Silver Seven's Capacitor change

Post by MRHP » Sun Apr 15, 2012 10:12 pm

Nice work Brian, if you need somebody to sound check those amps just send them on down :-" :-"
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thuffman03
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Re: Silver Seven's Capacitor change

Post by thuffman03 » Mon Apr 16, 2012 10:55 am

Nice job Brian!
Some cool Carver stuff!

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tinpan
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Re: Silver Seven's Capacitor change

Post by tinpan » Fri Apr 20, 2012 7:17 pm

Very nice work, can't wait to see pics with the new tubes in
Tinpan

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