Egnater Renegade "Changing all tubes"

[mkj2112]

Hello all. I am really new to tube amps, but I have recently acquired both a rebel 20 and Renegade heads (due to luck and some trading) and I love them but after playing for awhile and reading other posts I want to change out the both the preamp and poweramp tubes (both are stock). I have tried to read up online about changing tubes and every where I look there are warnings about electocution and of course I want to avoid that. The renegade is set to bias very simply but my question is there anything to fear contacting while changing out the tubes? I have tried to locate diagrams for both amps to see what I need to avoid. I have looked and I don't need to mess with the circuit board itself on the renegade so am I good unplugging (letting things cool for an hour or two) and pulling preamp covers and tubes? I know this is a newbie question, but I don't have any friends that know anything about tube amps and I don't want to pay for something that I should know, but don't want to kill myself either.

Any pointers would be helpful.

 

[Len Rabinowitz]

There's a lot less to this than meets the eye. They put out those warnings because they have to assume that they have to get the message across to the dumbest idiot out there.

Let's assume that isn't you.

Unplug the amps from the wall. Let them sit for 5 minutes.

You are now safe. Any residual electricity in there is gone.

I have the Tourmaster so I can't speak to the Rebel or Renegade specifically, but make sure you bias them properly. Remember, you only bias power tubes. If you want to start with the preamp tubes only, no biasing at all.

 

[bbrodie]

I only have the Rebel 20. The bias test point sockets are inside the amp. The bias trimpots are there too.They have the recommended mv setting printed on the board for both the 6V6 and EL84 power tubes. No offense, but unplugging the amp and leaving it sit for five minutes does not discharge the power supply caps. Always use a volt meter to be sure. There are still lethal voltages in there even with the amp unplugged. Capacitors store electricity for quite a while unless they are discharged. The warnings are not just there for idiots. People who are unfamiliar with safe electrical practices are not idiots, just uninformed. Heed the warnings.

That said, power tubes need to be biased, preamp tubes do not. It's a pretty simple procedure. To change the tubes, just match the pins with the holes, don't force anything and you'll be fine. Sorry, I can't help with the Renegade.