LA2A with strange noise level

wavewalker · 10th August 2009

Hello
this morning my LA2A (original) sound with a bit high noise level ,
i replaced immediately the tubes with a new oiriginal U-audio set ,
but problem seem don't go away,
somebody have some info about?

what max noise level must be as normal -60db ,-70db ,-80db......?
there is a way to misure it?

thanks in advance to anyone
help me
"WW"

Led · 11th August 2009

Sounds like it might be a capacitor that has crapped out. You can look for any that are bulging at the top, but they don't always show physical signs that they have gone bad.

Recman · 11th August 2009

What model is it? Is it vintage, re-issue, DIY?

Smell the unit for any burning smell?

VoiceManMike · 11th August 2009

Check out the boys over at DIY here is the link to there LA2A section:
All things LA2a related
This group is big on LA2A's and is how I built mine.

Could need a recapping.
It could also be your T4B unit, they go out before most tubes and caps will.

If you end up recapping understand the caps will need to burn in before they reach their full sonic potential.

10th August 2009	#1
wavewalker Gear Head Join Date: Jul 2009 Location: EU/USA Posts: 39 Thread Starter	LA2A with strange noise level Hello this morning my LA2A (original) sound with a bit high noise level , i replaced immediately the tubes with a new oiriginal U-audio set , but problem seem don't go away, somebody have some info about? what max noise level must be as normal -60db ,-70db ,-80db......? there is a way to misure it? thanks in advance to anyone help me "WW"

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11th August 2009	#2
Led Lives for gear Join Date: Apr 2006 Location: Melbourne, Australia Posts: 2,711	Sounds like it might be a capacitor that has crapped out. You can look for any that are bulging at the top, but they don't always show physical signs that they have gone bad.

11th August 2009	#3
Recman Gear maniac Join Date: Oct 2005 Posts: 256	What model is it? Is it vintage, re-issue, DIY? Smell the unit for any burning smell?

11th August 2009	#4
VoiceManMike Gear nut Join Date: Jan 2009 Location: Los Angeles Posts: 107	Check out the boys over at DIY here is the link to there LA2A section: All things LA2a related This group is big on LA2A's and is how I built mine. Could need a recapping. It could also be your T4B unit, they go out before most tubes and caps will. If you end up recapping understand the caps will need to burn in before they reach their full sonic potential.