1967 Gibson GA5T - filter cap replacement and other updates?

[d.g.bowen]

Anyone know where I can get a replacement for the 3 way (20/10/10 450V) paper cap? I have some hum, started as only on initial warm up then subsided, getting worse, doesn't subside now, living on borrowed time. As an option, I assume I could use 3 separate caps if I really had to but would rather try and find a decent replacement. Don't see anything else that really needs attention unless someone has some experience with these critters and knows something I should be dealing with. Any help will be appreciated!

[xtian]

You can find multi-section can caps at tubesandmore.com, but I would be tempted to use individual caps, unless you're worried about vintage looks.

[Phil_S]

The 3 section can cap is pricey compared to singles.
http://www.tubesandmore.com/products/C-EC20-10-10-10
http://www.tubesandmore.com/products/C-EC2010X2-475
You can buy Illinois (a respectable brand) singles for probably $3-$4 each, making them 1/3 the cost. Unless I had vintage look concerns, It would be hard to convince me to use the multi-can.

[greekie]

I normally disconnect the old can cap and use discrete caps inside. Most amps have a couple of places where you can mount a terminal strip for that.

[d.g.bowen]

Filter caps went well, used 3 x Illinois caps, easy job, worked OK afterwards, hum was gone = success! As long as I had it apart, decided to replace the old black beauties with orange drops, now no sound from amp (very very quiet). Checked my work vs schematic, can't find any clue of what went wrong. Any ideas?

[Phil_S]

Remove the OD's and reinstall the black beauties. IMHO, that was not an upgrade or an update, and not necessary unless those caps were leaking. In an amp that old, especially all original, don't go looking for any extra work. Fix only what you are sure needs fixing.

Also, check for unintended grounds, solder bridges, and cold solders.