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on the drivers tubes? My two driver tubes in my integrated amp started arcing and I assumed the tubes were at fault. Days later my rectifier
tube flashed and blew my amp fuse. I tested it and there was no continuity, so it was effectively dead. I also tested the driver tubes, and they test fine.
I installed a new rectifier tube and the driver tubes are working fine
now.
Has anyone had a similar experience? Thanks.
David
Follow Ups:
Unless they are heavy duty driver tubes (e.g. EL34),that draw a lot of current, I don't see how a miniature or even a 6SN7 octal type would cause the rectifier to arc. Arcs in the rect. tube would usually be caused by a breakdown in the insulation between the anodes and cathode.
NT
It shouldn't as when a rectifier starts to fail the B+ drops. I had this a few months ago...the longer the amp ran and the left channel would get weak.
I replaced it. Three days later my output tube arced internally. I don't believe there was a connection.
A week later the right amplifier failed...screen resistor burned to a crisp and took the fuse out.
I euventually chalked it up to just sporadic tube failure.
You have to determine what caused your rectifier to arch.
It could have just been a failure in the rectifier itself.
The other cause is if something else failed in the amp causing too much current to be drawn though the rectifier causing it to arc.
A bad cap or a bad tube could cause this.
The act of arcing itself in the rectifier does not usually cause any damage, damage is a result of something else failing.
So, your driver tubes are toast and they could have taken out the rectifier, not the other way around.
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