[sdiy] Multi-section cap in old tube gear

[Travis Shire]

> a friend of mine picked up a WOBBULATOR (lucky schmuck:
http://electro-music.com/forum/post-209234.html).  there's a lot of hum and
he's suspecting a multisection cap marked as follows:
>
> sprauge
> 40-450 dc
> 30-450 (square symbol)
> 10-450 (triangle symbol)
> 20-25
> can com. neg
> d13771              125
>
> i don't have a lot ov experience w/ tubes, but my understanding is that
the terminals should have some symbols next to 'em to help key out which is
which value?  but he's not finding the symbols.  any advice on what to try
next?  i'm thinking the uf values may not be critical, and he could maybe
just average the difference and use 30uf for all 4 and see how it goes...
but obviously he doesnt wanna screw something up.
>

If it has a tube rectifier you'll want to keep the correct values in place.
The symbols (square, triangle, and what looks like a "D") are stamped in the
insulating wafer that the tabs go through. They're probably obscured by the
wiring.....move it around a bit and you'll see them.