ztone
New Member
Posts: 10
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Post by ztone on Mar 8, 2007 18:26:45 GMT -7
This past weekend I had 2 fuses blow in one day during my gig at church. I haven't really had any problems at that location for years so I don't think it was a power problem. I had a fuse blow 3 or 4 months ago, but just chalked that up to a fluke. Any idea what could be causing this? I did a search and saw that some folks pointed to the rectifier tube as a possible problem. How would I determine if that was the case or if it was something else?
Jeff
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Post by kledbet on Mar 8, 2007 18:42:10 GMT -7
The rectifier tube is a good guess. Just by another one and put it in and see if the problem goes away. Most folks think that these days a rectifier tube only lasts 3 years.
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Post by frunabulaks on Mar 16, 2007 17:57:33 GMT -7
Did they blow while playing?
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ztone
New Member
Posts: 10
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Post by ztone on Mar 18, 2007 18:37:53 GMT -7
Did they blow while playing? No. They blew when flipping the switch to come out of standby.
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Post by Jim @94 Amps on Mar 20, 2007 15:19:40 GMT -7
Check the rectifier and the output tubes.
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Post by James on Mar 20, 2007 18:15:53 GMT -7
I had the same issue........EXACTLY........got all worked up about it, when I finally realazied I was not using SLO-BLO fuses.......and the fast acting fuses were popping in a flash. Maybe others will benefit here from my oversight.
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Post by mward on Mar 21, 2007 8:35:34 GMT -7
New tubes flash, it's called the getter flash.
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Post by Jim @94 Amps on Apr 13, 2007 22:59:50 GMT -7
yeah, make sure the 1/2 amp fuses are buss MDL slo-blow type, otherwise a surge in current from flicking the standby can pop a regular fast blow fuse
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Post by jb on Apr 14, 2007 8:23:57 GMT -7
Check your power tubes also. The first fuse I blew was due to the rectifier, the second was due to the power tubes. One of the power tubes was not lighting up like the other.
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Deleted
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Post by Deleted on Apr 14, 2007 19:23:52 GMT -7
Best way to check it would be to put in a known good rectifier and try it. If ya still blow a fuse then it wasn't the rectifier. Do the same thing with the output tubes, don't forget to bias the new power tubes. If that doesn't work take it to a good amp repair man.
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Deleted
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Post by Deleted on Apr 21, 2007 18:57:54 GMT -7
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Post by ubertone on Apr 25, 2007 17:32:07 GMT -7
I had the same issue the same way - flipped off standby and in a flash of light...nothing.
It was the rectifier tube - it shorted and then took out the fuse.
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