Things I should replace on oldish tube amps?

[HarryAndAGuitar]

I have two relatively old tube amps, a JCM800 2204 from 1982 and a newly acquired Silverface Twin Reverb from 1974.

Both have new tubes but are there any other things I should replace that haven't been replaced since purchase to get the best out of these amps?

Thanks a lot.

Harry

 

[romsquiz]

If it ain't broke don't fix it.....

but if you must then electrolyte filter caps are the likely suspects.

 

[Soul Tramp]

There's a pretty good chance the filter caps are shot.

 

[Hamtone]

Caps are cheap insurance outside of that dont mess with anything.

 

[Marshall & Moonshine]

I have an '85 4104 (2204 combo) that I took in for a cap job. It came back as a whole new amp. I hadn't realized how much of a difference it could make. Much more articulate, now. Also it was damn near silent, with no guitar plugged in (what I consider a test for amp noise with no variables, beyond electrical surroundings) and everything dimed.
Caps, definitely. For safety of amp and quality of sound.

 

[qpHalcy0n]

Definite +1 on the cap job. Even though they may be perfectly functional, after 30 years, it's a good insurance policy. You should have 3x 50/50uF can caps in there (the 2204). F&T's are good and can be had for about $15 a pop. If you're feeling particularly resourceful, this is an easy one to do yourself. Be sure to read up on cap discharging safety! Don't just go off touching them without draining them!!

 

[joshatatlasstands]

just the caps as stated above. Old caps can suck frequencies right outta your tone.

 

[Marshall & Moonshine]

just the caps as stated above. Old caps can suck frequencies right outta your tone.

I was amazed (won't use 'shocked' in this context...) at just how true this was!! Don't go nuts on them, but don't skimp, either. It's only once every 10-15 yrs or so.