The Great Tube Replacement Adventure!

  • Thread starter Thread starter amiller
  • Start date Start date
baron55":2sxxf4ho said:
One thing to consider. If one of the tubes blew a screen resistor that would take out a fuse. But then after the screen resistor is blown, the amp will work fine since that tube socket is not getting screen voltage to the tube therefore it is not working. One way to check is to see if one or more of the tubes are "cold" not hot like the others. It will still light up due to the heaters.

Just something to check. Many amps have blown screen resistors and guys don't even know it.
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Hmmm...I did not know that. I'll have to check that out today...thanks.
 
I turned the amp on and played if for about 5-10 minutes and then checked the tubes. All of the power tubes were nice and hot...as they should be. So, I don't believe a screen resistor went bad.
 
I READ ENOUGH on the blown fuse and then they work fine.
A loose cathode connection can reconnect just moving it around, its not safe in any amp, ask for a refund.
Then buy from a tubestore that actually test there tubes.
 
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