Capacitor Types in my M3

[bcmatt]

So, I'm finally getting around to updating the caps in my Hammond M3. It finally gets lots of use by a friend of mine that I jam with.
I re-capped my Leslie 142 about a month or two ago because of a bit of extra noise... this turned out not to fix it; I now know it is likely the Hammond itself since all the voltages seemed to be right as well:
http://bentonelectronics.com/servicing- ... amplifier/

I had assumed my M3 was recently recapped before I bought it because the seller claimed it was updated... but apparently he just meant the 3-prong cord. Fair enough; I'm doing it now.

So obviously the multi-section cans are electrolytic, so I'm updating those... but I am rather unfamiliar with vintage caps and what types they are based on their looks. I imagine the ones covered in orange cardboard are electrolytic too (some 25/25s).

What about the chocolatey brown ones (large .047 300V)?
And the white 150V caps?
Are they prone to go bad, or is that overkill? Should I pull them out and test their capacitance? That won't tell if they are leaky I'm guessing.

I also see that that one wirewound resister on the far left looks quite mis-shapen. Is that likely a sign it could be bad? I think I will yank it and measure it to see..
Any thoughts?

Thanks!

[martin manning]

Replace all the old electrolytics first and see where you are sound-wise. Anything over 1uF is most likely an electrolytic. If you have hiss and crackling noises, leaking coupling caps is something to look into. My point is don't pull them or spend time measuring unless you have an issue.

[bcmatt]

Thanks Martin. Will do. That sounds pretty reasonable.

Getting this amp out of the organ was a bit of a PITA in the first place... about 20 wires to unsolder just to get it free. Just want to make sure I don't have to do that too often.