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Silver Seven's Capacitor change

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BrianT

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Pair of Silver Sevens

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Location: Ottawa, Canada

Post Sun Apr 15, 2012 1:29 pm

Silver Seven's Capacitor change

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 1208 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 1208 times
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kingman

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(pair of) SILVER-7 TUBE AMPs

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Post Sun Apr 15, 2012 2:04 pm

Re: Silver Seven's Capacitor change

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

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"TAZ"

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Post Sun Apr 15, 2012 2:27 pm

Re: Silver Seven's Capacitor change

Congrats on a great job.
engtaz


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Zoot Horn

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SILVER-7 TUBE AMP

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Post Sun Apr 15, 2012 2:51 pm

Re: Silver Seven's Capacitor change

Nice caps and nice work there Brian. =D>
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Martin1970

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TFM-25

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Post Sun Apr 15, 2012 3:33 pm

Re: Silver Seven's Capacitor change

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.
Carver: ALS plat upgrades, TX-11a, C-9, C-1
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kingman

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(pair of) SILVER-7 TUBE AMPs

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Post Sun Apr 15, 2012 3:47 pm

Re: Silver Seven's Capacitor change

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

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Pair of Silver Sevens

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Joined: Sat Oct 11, 2008 4:51 pm

Location: Ottawa, Canada

Post Sun Apr 15, 2012 4:51 pm

Re: Silver Seven's Capacitor change

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
VPI Classic Turntable (blk)
Transfiguration Phoenix Cartridge
Sunfire Vacuum Tube Control Centre. C/W Mod'ed Phono Stage
Carver Silver 7's Tube Amps
Raysonic CD-168 CDP (silver)
Carver TX11.
B&W 802D's Rosenut
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mbskeam

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SILVER-7t

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Post Sun Apr 15, 2012 6:12 pm

Re: Silver Seven's Capacitor change

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


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MRHP

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TFM-75

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Post Sun Apr 15, 2012 10:12 pm

Re: Silver Seven's Capacitor change

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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Post Mon Apr 16, 2012 10:55 am

Re: Silver Seven's Capacitor change

Nice job Brian!
Some cool Carver stuff!
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tinpan

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TFM-45

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Post Fri Apr 20, 2012 7:17 pm

Re: Silver Seven's Capacitor change

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

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