Question regarding aging tubes.

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tc

Uptonogood
If I have a tube amp just sitting around for years in a decent environment, do the tubes need replacing afterwards (besides whatever servicing the amp might need) or do they age strictly depending on usage time?
 
Re: Question regarding aging tubes.

Unless there's a defect a tube will last a VERY long time on the shelf or plugged into an amp that isn't being used.
 
Re: Question regarding aging tubes.

The tubes should be fine - I'd be more worried about the electrolytic caps (if it's been at least 10 years since the last cap job)
 
Question regarding aging tubes.

Depends on how long and the environment which it was stored in. In most cases I would say that tubes don't go bad from sitting but other components can like caps and pots. In most cases pots can be cleaned but if a cap is bad it will
Need to be. Replaced. Best thing to do is fire it up and see what happens. Keep the volume down and let it warm up slowly then once it's hot crank that sucker up
 
Re: Question regarding aging tubes.

I have a Kalamazoo amp from 1940 that's all original. My Bassman I think is a 1980 and it's all original. The caps are the only thing I'm concerned about.
 
Question regarding aging tubes.

That Kalamazoo should be checked out by a good amp guy. The caps start to leak after about 10 to 15 years so the will need to be changed but rake it in and have it checked

The guy that died all bathe work on my amps has told me many times that guys get a great deal on a "garage sale amp" that doesn't work, then they bring it to him and he hits then with a price 150 to 250 to make it work and they flip. It's still a good deal in my eyes but some don't think so. Where else can you get can amp that's 50 to 60 years old but needs a bit of work. I don't know of anything that isn't that old that wont need done work
 
Re: Question regarding aging tubes.

That Kalamazoo should be checked out by a good amp guy. The caps start to leak after about 10 to 15 years so the will need to be changed but rake it in and have it checked

The guy that died all bathe work on my amps has told me many times that guys get a great deal on a "garage sale amp" that doesn't work, then they bring it to him and he hits then with a price 150 to 250 to make it work and they flip. It's still a good deal in my eyes but some don't think so. Where else can you get can amp that's 50 to 60 years old but needs a bit of work. I don't know of anything that isn't that old that wont need done work
Well said...
I have been through the same scenario on many occasion. Some guy buys an "old" hand wired amp at a garage sale for $4.50, and then gets pissed because it needs 200-300 dollars in parts, labor and a speaker. There is No Way (assuming all parts needed to be purchased) you could build a 5-15 watt tube amp for 300 dollars.
 
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