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AUDIO FORUMS >> General Discussion and Support >> rectifier bad?
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Message started by Jeff on 03/08/10 at 15:08:37

Title: rectifier bad?
Post by Jeff on 03/08/10 at 15:08:37

the rectifier tube in my taboo is glowing purple at initial turn on.
the color clears out after a minute or so.

i believe it's a mullard army tube.
been fine for about a year, just started doing this.
sounds normal at low volumes.

should i replace this tube.

Title: Re: rectifier bad?
Post by Rivieraranch on 03/08/10 at 22:17:13

There are a lot of threads about the purple color. It may have to do with extra electrons bombarding against the glass. I have some power tubes that do this. I don't know if it is the same with rectifiers. A good rectifier can last nearly the life of the equipment. Maybe you can get it tested to make sure that it is not going bad on you.

Title: Re: rectifier bad?
Post by Jeff on 03/22/10 at 20:42:03

well turns out the tube was bad.

the gf left the house and i got a chance to play the stereo with some real volume...tons of distortion.

i put a philco 5y3 in that i had laying around and everything went back to sounding awzm.

Title: Re: rectifier bad?
Post by Rivieraranch on 03/22/10 at 23:02:49

Now you can chuck it then. The Philco is probably a Sylvania. You won't have any trouble with it.