TA30 Giving Out

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someone
Bottle Rocket
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TA30 Giving Out

Post by someone » Fri Mar 10, 2017 1:49 am

I've had a TA30 for almost 5 years now. It's been played pretty regularly in that time and just lately it's started doing this terrible thing where it starts kinda crapping out after playing with it for a while and then the sound coming from it gets really quiet and eventually sorta disappears. I changed all the power tubes not long ago, have never changed the preamp tubes before.

Not really sure what causes this. Any advice? Thanks 8)

jmontgomery
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Re: TA30 Giving Out

Post by jmontgomery » Fri Mar 10, 2017 8:57 am

You might try changing out your preamp tubes one at a time with a known good tube.
Jeff M.

fjs1962
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Re: TA30 Giving Out

Post by fjs1962 » Sat Mar 11, 2017 9:37 am

Swap,out your phase inverter tube with a new one. The TA has a Post Phase Inverter master volume on the Vox channel so it pushes the phase inverter tube pretty hard. My TA started doing the same thing (volume dropping, dull tone) and a new phase inverter tube fixed me right up.

someone
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Re: TA30 Giving Out

Post by someone » Sat Mar 11, 2017 11:02 pm

Okay, I'm gonna give that a try. I'll post back with an update!

someone
Bottle Rocket
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Re: TA30 Giving Out

Post by someone » Sat Mar 11, 2017 11:03 pm

hmm... any suggestions on the best place to buy a phase inverter tube for the ta30? I've never replaced one, don't know what I'm doing heh.

fjs1962
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Re: TA30 Giving Out

Post by fjs1962 » Sun Mar 12, 2017 6:19 am

someone wrote:hmm... any suggestions on the best place to buy a phase inverter tube for the ta30? I've never replaced one, don't know what I'm doing heh.
Any Mesa dealer should have them. It's a 12ax7. It will be the 4th preamp tube over from the input side.

If you have a Mesa authorized service person close by you should take the amp in while it's still under warranty. There were a couple of updates on the TA-30 and depending on when yours was made it may or may not have them. Mesa will update the amp for you under warranty if any apply to your amp.

jmontgomery
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Re: TA30 Giving Out

Post by jmontgomery » Sun Mar 12, 2017 8:12 am

Do you know what build date these updates were made on new amps shipping out?
Jeff M.

fjs1962
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Re: TA30 Giving Out

Post by fjs1962 » Sun Mar 12, 2017 9:50 am

jmontgomery wrote:Do you know what build date these updates were made on new amps shipping out?
No but you can call Mesa with your serial number and they should be able to tell you.

jmontgomery
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Location: Oklahoma

Re: TA30 Giving Out

Post by jmontgomery » Sun Mar 12, 2017 12:23 pm

I don't own one but with the low prices I've seen I've been thinking about buying a TA30 head.
Jeff M.

fjs1962
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Re: TA30 Giving Out

Post by fjs1962 » Sun Mar 12, 2017 1:17 pm

jmontgomery wrote:I don't own one but with the low prices I've seen I've been thinking about buying a TA30 head.
I love mine, it's great if you like Vox tones. I had a combo for a whlie, then sold it to buy a head. I wish Mesa would come out with an updated version like they did with the Royal Atlantic.

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