Thats about it. Last rehearsal everythings fine, no problems at all. Yesterday, before the rehearsal, I switched on the recto and... nothing. Tryed another different power cord, where the tuner was pluged, and nothing. I remembered the fuse so I took it out and it was all pitch black! Called my cousin/tech PJM, he brought another 250v 2A fuse, replaced the old one and the recto just raised from the dead! So no big deal, I just wonder why the fuse blew up in the first place...
Blew fuse without reason!
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JCDenton6
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Hmm... :?
It could be a rectifier tube on the way out, not dead yet but causing enough power fluctuations to cause the fuse to blow. Or could be the silicone diodes (rare that they cause this)
Keep an eye on your tubes just to be sure.
It could be a rectifier tube on the way out, not dead yet but causing enough power fluctuations to cause the fuse to blow. Or could be the silicone diodes (rare that they cause this)
Keep an eye on your tubes just to be sure.
+1
99% of blown fuses are power tube/rectifier tube related. It could also have been a power surge or noise on the AC supply line. Do you use a power conditioner?
ALWAYS carry spare fuses of the correct rating in your gig bag. Keep them with your spare tubes.
Dom
99% of blown fuses are power tube/rectifier tube related. It could also have been a power surge or noise on the AC supply line. Do you use a power conditioner?
ALWAYS carry spare fuses of the correct rating in your gig bag. Keep them with your spare tubes.
Dom
As the power tubes are not that old, only a 1 year +/- (I do know that they can give problems at any time, or come with defects even bran new). I think it might been some sort of power flutuation as this last days the weather was very unstable (but not thunders and lightnings). Yes, I do have a power conditioner (furman PL8 E Plus) but in my home with my recording rack. I allways keep saying I have to bring it to the rehearsal room but I didn´t. This was a warning! I will take it to the rehearsal place tomorrow for sure, and I mean it! Thanks for the replys.
94Tremoverb
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It will be a power tube or a rectifier tube with an intermittent short. Just because they are fairly new proves nothing. This is fairly common, and if you're unlucky you may blow several fuses before you can identify which tube it is.
It could just possibly be a power surge or spike, but that doesn't usually result in the black burned-looking fuse, usually just a break in the wire or a bit of melted metal inside the glass.
It won't be a silicon diode - they certainly can short as well, but when they do they stay shorted and will blow any replacement fuse.
It could just possibly be a power surge or spike, but that doesn't usually result in the black burned-looking fuse, usually just a break in the wire or a bit of melted metal inside the glass.
It won't be a silicon diode - they certainly can short as well, but when they do they stay shorted and will blow any replacement fuse.
