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Thread: Getter flash spots changing over time

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    Getter flash spots changing over time

    Does it indicate a problem or age, etc. if a tube (6550) starts to get a gray coloring around the side getter flash spots. It was totally silver when I first installed the tubes and now the edges are turning grayish.
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    Lifetime Member Enzo's Avatar
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    Generally means the vacuum inside the tube is going soft.

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    Education is what you're left with after you have forgotten what you have learned.

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    Supporting Member eschertron's Avatar
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    What's the time frame? Hours, months, decades?

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    If it still won't get loud enough, it's probably broken. - Steve Conner
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    Lifetime Member Enzo's Avatar
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    All I can say is this:

    If you see a guy on the street, and his hair is turning gray. It tells you he is aging - whether it happened suddenly or over 20 years is hard to say.

    A white edge to the getter means air, however fast things inside are changing. SLow leak, fast leak, who knows?

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    Gas has gotten into the tube SOMEhow. Whether via vacuum leak or released because the tube was overheated, can't tell you. No way to predict life, either. Just keep a casual eye on it, in my opinion.

    Yes - what IS the timeframe?

    Justin

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