2. amps-preamps
  3. 1074356485

Tubed Pre Dying? ?

I've noticed that there is now some (faint) noise coming through my system where there was none before. Could this be a signal that my CJ tubed PV14L may be in need of new tubes? I bought it here, used, but the tubes shouldn't be more than 1.5 years old.

What are the signs of dying tubes?

Thanks for any suggestions.
rcbartl
elizabeth
6,726 posts
 
Tubes are tubes. Each tube is an individual thing with it's own querks. A tube is getting noisey. Yeah, start looking for some new ones.
Age for tubes is only an average thing. A little bit like light bulbs in a way some can last for years, some for a week!
jmcgrogan2's avatar
jmcgrogan2
6,346 posts
 
My friend has a PV14L, nice preamp. He is sending his to the factory for a mk II version upgrade, which I believe includes re-tubing. It is only costing him about $275 + shipping. There are other cap/resistor/? upgrades as well. This may be something for you to look into.

Regards,
John
kevins's avatar
kevins
13 posts
 
I just changed the tubes on my CJ PV14L today. It took me about 10 minutes. Order some tubes online. Try www.thetubestore.com
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