Soul Tramp
Member
Jardin, I'm a bit late to the party. I have a 66-J. Mine is a '64 (if I remember correctly), not a tweed. It was a non-working basket case when I got it, but it was for the most part molested. Everything inside was pretty much as it came from the factory. There were quite a few failed components and the speaker was blown.
The noise you described is not what you'd expect from failing filter caps. More likely a coupling cap or solder joint (as you discovered).
I replaced my filter cap can with one from CE Distribution, part # "CED C-EC30X4-475. Two of the internal caps are 30uf while the original were 20up, but it's a difference that's inconsequential. You can see the new cap can in the first picture.
It would be a good idea to check the health of the speaker as it can be a source of unwanted noise. I would do three tests.
1) Check the DCR (voice coil impedance)
2) Visual inspection (cone, surround, spider, wiring, magnet)
3) Voice coil rub (gently push the cone in and release. Listen & feel for rubbing)
The noise you described is not what you'd expect from failing filter caps. More likely a coupling cap or solder joint (as you discovered).
I replaced my filter cap can with one from CE Distribution, part # "CED C-EC30X4-475. Two of the internal caps are 30uf while the original were 20up, but it's a difference that's inconsequential. You can see the new cap can in the first picture.
It would be a good idea to check the health of the speaker as it can be a source of unwanted noise. I would do three tests.
1) Check the DCR (voice coil impedance)
2) Visual inspection (cone, surround, spider, wiring, magnet)
3) Voice coil rub (gently push the cone in and release. Listen & feel for rubbing)
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