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Modular Amps
Rigs & Tones
Time for new power tubes?
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<blockquote data-quote="retropete" data-source="post: 136010" data-attributes="member: 3334"><p>Thanks so much! You gave me the courage to go out and get a multimeter and try it! And duh, I didn't realize when a power tube blew in this amp, an LED lights up in the back and a fuse blows, indicating which tube it is.</p><p></p><p>However I have run into a bit of an issue. For the second power tube, I'm not getting any reading at all on the multimeter. I thought maybe the new tube was bad, so I swapped it out for one of the originals -- and this one was one of the ones that was ok. However, still no reading!</p><p></p><p>Tried out the amp anyway and it sound great. However, I don't want to use it a lot without it being correctly biased.</p><p></p><p>Another issue that I ran into was the fuse on the back was labeled 400mA. However in the manual it says don't use anything but 250 mA! I figure the marking on the back is reliable. What say you guys?</p></blockquote><p></p>
[QUOTE="retropete, post: 136010, member: 3334"] Thanks so much! You gave me the courage to go out and get a multimeter and try it! And duh, I didn't realize when a power tube blew in this amp, an LED lights up in the back and a fuse blows, indicating which tube it is. However I have run into a bit of an issue. For the second power tube, I'm not getting any reading at all on the multimeter. I thought maybe the new tube was bad, so I swapped it out for one of the originals -- and this one was one of the ones that was ok. However, still no reading! Tried out the amp anyway and it sound great. However, I don't want to use it a lot without it being correctly biased. Another issue that I ran into was the fuse on the back was labeled 400mA. However in the manual it says don't use anything but 250 mA! I figure the marking on the back is reliable. What say you guys? [/QUOTE]
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Modular Amps
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Time for new power tubes?
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