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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Help on bring up a Scott 299-B that has not seen use since 1965 ! posted by HiFiBuff on January 21, 2004 at 14:16:30:
If it's been off a long time then my primary concern is the leakage of the filter capacitors (large aluminum cans). This could be downright dangerous. I would replace them before I would even consider putting 110 volts to it. Otherwise the metal chassis could be hot with DC. Leakage is dangerous! Especially 450 volts of it! I would use the lite bulb in series with the variac. And I wouldn't turn an amp on without some kind of load on the output, ie a dummy resistor load of approsimate wattage or an old speaker. If it has a volume control I would turn it all the way down. On turn on, if the lite bulb glows consinuously then you've got some other issues because it's drawing too much current. If it has a fuse, the fuse should blow. Good luck! James
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- Primary concerns! - j.l.guillebeau@att.net 14:30:45 01/21/04 (0)
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