>
>I have an SB1000 and I bought a Chinese 3-500G tube. Worked great for
>awhile, about 40 hours... then one day..I came in and turned the amp on to
>warm up, and both 15 amp fuses immediately blew. I have it connected to the
>120V
>wall socket. I cautiously unplugged the amp, removed the tube, replaced
>the fuses, and put everything back together. I turned the amp on and it
>performs great.....the pwr supply and fan run and I have about 3200 Volts.
>So I put the tube back in and blam!...it blows the breakers. How can I
>test this tube, and any other ideas before I send the tube back to AES.
>thanks.Greg.
>
To find out what's what you need a high pot. Anode to grid leakage at
8kV should be under 10uA. If you see a blue glow, a bad metal/glass seal
is indicated. // Grid to fil. leakage should be under 3uA or so at 6kV.
>
>
>--
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>
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
--
FAQ on WWW: http://www.contesting.com/ampfaq.html
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Search: http://www.contesting.com/km9p/search.htm
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