No sound in either channel (resolved)

[Jimb0]

just to be sure the 3K resistors are the ones that came with the non-speedball kit?

[Paul Birkeland]

Yes.

[Jimb0]

Just wanted to make sure I did this right

https://imgur.com/a/Kb6eKIB

also what voltages should I be checking here?

[Paul Birkeland]

7 and 9.

-PB

[Jimb0]

219v at 9
6v at 7

[Paul Birkeland]

For all of the connections on the octal socket, I would pull a little more wire through them and wrap it around the socket.

The 219V at terminal 9 makes me wonder if one of the black wires in the amp is loose. 

If you happen to have a spare 6080/6AS7G sitting around, it wouldn't hurt to give that a shot as well, but having both 7 and 9 so far off in different directions would tend not to suggest a bad tube.

[Jimb0]

Good morning PB. I rechecked the black wires and couldn't find anything that was loose, but I resoldered them just in case. I don't have a spare 6080 at the moment so I can't test it. However, my 6080 tube is a bit loose at the base (the metal part at the bottom), if that means anything. Rechecked the voltages and got the same readings at 7 and 9.

On another note, I actually remember hearing a noise the first time I turned the amp on a week ago. I'm not sure where the noise was coming from but it stopped working shortly after that. I had a spare 6080 tube (but later sold an amp with the tube) and tested that but by that time the big board stopped working. Do you think maybe the 6080 tube was the one making noise and is it possible that it messed up the big board?

I will buy a spare 6080 for testing.

[Paul Birkeland]

Is one 3K resistor getting much hotter than the other?  You can run the amp for about 60 seconds, then shut it down and wait about 20 seconds, then safely touch the resistors.

The disparity in the voltages would make me wonder if both resistors would be cold. 

[Jimb0]

yes both 3k resistors are cold

[Paul Birkeland]

So 219V DC across a 3K resistor will dissipate 16W.  That won't be enough to completely blow the resistor immediately, but it will get very hot in a hurry.  Since it isn't getting hot, this is almost certainly an issue of loose connections in the amp not properly conducting and giving anomalous readings.

[Jimb0]

PB, I just resoldered every joint in the amp and paid close attention to the connections in the octal socket but I'm still getting the same readings.

[Paul Birkeland]

What DC resistance do you get between terminal 12 and terminals 7 and 9?

[AB2KH]

Hello JimbO and Paul. Paul correct me if I am wrong. In the above photo it appears that the 10K cathode resistor on the left side is connected to B+ which is flowing through it to the output cap which is shorting to ground through the head phone jack?? That resistor should be connected to the same ground point that the resistor on the right is connected to?? Don't plug your phones in!

Chris/AB2KH

[Paul Birkeland]

Good eyes Chris, I didn't even notice that!

[AB2KH]

Sorry, I meant 3K @ 10 watt resistor. Just to clarify,don't want confuse the confusion.