Does this tube look like it's bad? It's on a Marshall AVT20X.

[jjudas]

It powers on but no sound.

 

[SG John]

Shouldn't it be lit up?

 

[eSGEe]

how long have you had it -- never heard of that model-- very cool from the videos --
but hey its a MARSHALL

 

[Amp Mad Scientist]

It powers on but no sound.

View attachment 49562

Can't really tell.
Is the tube turned black inside the glass?
Just plug another tube in and find out....

 

[jjudas]

Shouldn't it be lit up?

I guess so. Please pardon my ignorance with tubes. The only tube amp I owned was a '68 Ampeg Gemini. It caught on fire during band practice. Lol. I plugged in the Marshall and the tube very faintly lit up in the dark. I couldn't see it lit up with the lights on. It should light up more than that right?

 

[eSGEe]

Id think the cheapest option would be replace the tube.......if the sound doesnt return.............................then oits AMP REPAIRMAN time (soldering will most CERTAINLY be involved!!!) horror----I feel for you my brother

 

[jjudas]

how long have you had it -- never heard of that model-- very cool from the videos --
but hey its a MARSHALL

I've had it about 3 years. I bought broke for $30. I used it as a speaker cabinet for about a year. I decided to attempt to repair it today.

 

[jjudas]

Id think the cheapest option would be replace the tube.......if the sound doesnt return.............................then oits AMP REPAIRMAN time (soldering will most CERTAINLY be involved!!!) horror----I feel for you my brother

I'm gonna order a tube.

 

[eSGEe]

Or ....get a Peavey 112 Bandit ------------

oh come on he is in La. -- you can score them for like 45.00 at any pawnshop

 

[jjudas]

Can't really tell.
Is the tube turned black inside the glass?
Just plug another tube in and find out....

It's not really black but it's not really lighting up. I'm ordering a tube.

 

[eSGEe]

wish you were closer -- Id give you a "tester" to try ....Im sure there's some 12ax7's laying around the swamp someplace............

 

[SG John]

You should at the least see two little lights at the top of the tube.

 

[jjudas]

You should at the least see two little lights at the top of the tube.

View attachment 49563

Okay... Thanks John!

 

[eSGEe]

on a much more serious note.....................................is that a SPIDER MAN BLANKET in the opening post pic????????????

 

[jjudas]

on a much more serious note.....................................is that a SPIDER MAN BLANKET in the opening post pic????????????

Yes sir. You are correct. Lol.

 

[eSGEe]

 

[Amp Mad Scientist]

Yes sir. You are correct. Lol.

Spider Amp, Spider amp. Does whatever a Spider amp can.

 

[Amp Mad Scientist]

(next episode) Spider Pig Returns ! (for his amp)

 

[Amp Mad Scientist]

I've had it about 3 years. I bought broke for $30. I used it as a speaker cabinet for about a year. I decided to attempt to repair it today.

Can you make voltage measurements? Do you have a meter?

 

[Amp Mad Scientist]

on a much more serious note.....................................is that a SPIDER MAN BLANKET in the opening post pic????????????

you, it was YOU who started it.