Tube swap out...

[Jazzric]

Hey guys , just ordered up some JJ-tubes from eurotube...now since I'm new at this..just to make sure I'm doin it right..

1- unplug..face plate off..

2- drop the chassis by the 4 screws at the top.

3- old tubes out...

4- new tubes in...

..is there a certain way to handle the tubes, do I touch with hand or with cloth or something.....

5- put chassis on top of cab, fire it up and enjoy the tubes glow..( just kidding, I think)

humm..soo I'm thinking that's it ???

 

Thanks in advance........

[TWANG]

yep. just be careful not to bend the legs..

and don't take 'em out hot!

you kind of back and forth pressure them in.. like a fat lady wiggling on tight jeans.

a little here, a little there.

 

some ax7s don't glow a bit.

but the el84 will.

 

TWANG

[Steven Lister]

...just to make sure I'm doin it right..

1- unplug..face plate off..

2- drop the chassis by the 4 screws at the top.

3- old tubes out...

4- new tubes in...

..is there a certain way to handle the tubes' date=' do I touch with hand or with cloth or something.....

5- put chassis on top of cab, fire it up and enjoy the tubes glow..[/quote']

That's one way..., here's a slightly easier one:

1- unplug..back panel off.. (pry glue loose with putty knife under the "horns")

2- flip VJr. on its head

3- old tubes out... (pre-mark with felt tip to keep pin alignment correct - also push down 1/4 turn 12ax7 can)

4- new tubes in...(align pins to match your markings on old valves replace can & retainer on EL84)

..use rubber glove or clean cloth to keep body oil off of glass (prevents hot spots/premature failures)

5- replace back panel, warm it up and enjoy

 

Hit every BLUE NOTE baaaby..., I'm going to play on:-"

[Eracer_Team]

in either case you're still going to have to remove the shields from the tubes.

One tube has a little top hat ring with springs holding the tube, the other has an aluminum can over top that's spring loaded.

With the can just turn a ¼ turn and it should pull straight up