Fender guitare tube

[Bab]

how can I veryfi the condition of tubes on my Fender guitare amplifier. I don't have a tube tester.

Tank you

Yves

 

[halojoy]

how can I veryfi the condition of tubes on my Fender guitare amplifier. I don't have a tube tester.

Tank you

Yves

I think the more experienced ones
are looking at the colors of the glow
when the tube starts to warm up and when it is warm.

They know how to see if there is anything that is
going to give up life soon.
I think tubes has not as long lifespan as transistors.
If one use slightly less power to heat the tube
it will live longer,
maybe at expense of some little prestanda.

 

[316a]

how can I veryfi the condition of tubes on my Fender guitare amplifier. I don't have a tube tester.

Tank you

Yves

Three solutions , first one obvious : find someone with a tube tester ! Second : avoid the issue and buy a complete set of new tubes (not recommended) . Third : measure the voltages between cathodes and 0V . You may need a schemetic for this with the correct voltages marked , also other components drifting with age (anode loads / cathode bias) may affect this . Go for option 1 !

316a

 

[psychokids]

Or option number 4, buy a new set of tubes because one day its going to have to happen anyway. If the new ones sound a lot better, then the old ones were getting too old. If you cant tell much of a difference, give the old ones a while longer.

-Chris

 

[SHiFTY]

What kind of tubes are they?

If they are 6V6s, just get some NOS ones. They are cheap as. I find the made in Holland ones from the mid 60s the best 6V6 for guitar.