GOOD BAIT !

[Spudmurphy]

Took the F50 (combo) out of it's case as I want to do some cleaning on the valve bases.
The amp still has the Mesa 12 AX 7 tubes in there and I notice that V2's valve is black at the head of the tube whereas the others are silver?


However when I took the chassis out I notice that written on the circuit Board are the words "Good Bait!" does anybody know anything about this?

Spud

Edit
The 12 ax 7 tubes have an aluminium shroud on them - what is the purpose? - Heat soak prevention? or just to keep them snugly in place?

 

[domct203]

The aluminum "cans" are for EMI / RFI shielding.

If the amp sounds/functions as it always has I wouldn't be concerned with the color shade of the getter flash (silvery coating at top) unless it was white/light grey. That would indicate a loss of vacuum.

Can you post a clear picture of this handwriting? It could be a Mesa employee's name.

Dom

 

[Spudmurphy]

Took the F50 (combo) out of it's case as I want to do some cleaning on the valve bases.
The amp still has the Mesa 12 AX 7 tubes in there and I notice that V2's valve is black at the head of the tube whereas the others are silver?


However when I took the chassis out I notice that written on the circuit Board are the words "Good Bait!" does anybody know anything about this?

Spud

Edit
The 12 ax 7 tubes have an aluminium shroud on them - what is the purpose? - Heat soak prevention? or just to keep them snugly in place?

Sure thing - have the Olympus Digi SLR charging now and will post later.
Thanks for the reply.

 

[Spudmurphy]

Here's the photos

Sometimes when something degenerates over a period of time it's difficult to say if the amps tone is somewhat compromised.

It was certainly noisy the other night when the amp was switched on.

 

[domct203]

Wow, that indeed says "GOOD BAIT" and appears to be part of the PCB silkscreen. It must be a Mesa "inside" joke.

If the color of the getter bothers you, and you think it is noise related, go ahead and change it. It will not hurt the amp, that's for sure. Those 12AX7's look like newer tubes, how old are they?

Hopefully someone else will chime in about the "GOOD BAIT".

Dom

 

[Monsta-Tone]

If the tube is still working (noisy or not), then it's not a vacuum leak. Probably just a little different mixture of gases when the tube was flashed.

The "Good Bait" could be a board revision. Can't remember what amps they were, but there were different quotes on the boards to signify revision versions and dates.
:lol: Could have just been an inside joke to keep us guessing too...... :lol:

 

[domct203]

What's funny is that within 3 hours there has been 23 views of this thread.

Good Bait indeed! :lol: :lol: :lol:

Dom

 

[Spudmurphy]

Wow, that indeed says "GOOD BAIT" and appears to be part of the PCB silkscreen. It must be a Mesa "inside" joke.

If the color of the getter bothers you, and you think it is noise related, go ahead and change it. It will not hurt the amp, that's for sure. Those 12AX7's look like newer tubes, how old are they?

Hopefully someone else will chime in about the "GOOD BAIT".

Dom

Cheers Dom

I bought the amp second hand a good few years ago and use it for larger venues - 'cos it's **** loud!!
It's not bothering me in itself and I love the tone.

My mate is a professional amp tech and stocks Sovtek tubes so I can get "mates rates" on them - I guess I'll revalve the 12 ax 7's and keep the others as spares.

When one went on my Blues Junior it looked like this - and it was definitely gone!! lol

 

[Spudmurphy]

What's funny is that within 3 hours there has been 23 views of this thread.

Good Bait indeed! :lol: :lol: :lol:

Dom

Ha yeah I don't post much but when I do "it's a good 'un" :lol:

 

[Spudmurphy]

Good Bait - GB - Great Britain?

Nurse more medication!!

 

[Spudmurphy]

Mesa certainly do have a sense of humour. On the back of the amp there is a warning
"Do not expose this unit to rain, moisture or thieves" :lol:

 

[domct203]

Looking back at this post, viewtopic.php?f=24&t=54589 I just realized that the main PCB in my Roadster has "DIS A FINE AUTO" written by the bias circuit!

I wonder what else we might dig up?

Dom

 

[Jackie]

I'm gonna check out my 2:90's gut shot right fking now :lol:

EDIT: sadly nothing, it says "PHOO DUP QO" or something on a cap but I doubt it's anything... certainly not DIS A GOOD AUTO :lol:

 

[domct203]

I can make the relation with my Roadster, a Roadster is a "fine auto" http://en.wikipedia.org/wiki/Roadster :wink:

I have no idea how "Good Bait" is related to the F Series amps though.... :?

Dom

 

[Spudmurphy]

I actually posted a query on Mesa Boogie Facebook page and had some replies.

Regretably as I'm using the computer during my lunchtime in work, I can't get access to FB