Re: [Harp-L] Rectifier Tube

[Matt Prouty <matthewprouty@xxxxxxxxx>]

Bruno,

Tudo bem?

Can you tell me a little bit about the amp?  How many gain stages does 
it have?  What is the output/power section set up as?  How many power 
tubes and the type.  Also what kind of rectifier?

One of your gain stages maybe bad causing the amp to not achieve full 
power.

Where do you live?  There is a great amp tech on Teodoro Sampaio in 
Sampa, I forget his name but Jair da Vintage can get you in contact with 
him.

What I would do is put a whole new set of tubes that test good in the 
amp and see if the problem goes away.

Change every tube.  Make sure every tube lights up, heaters and power.

Also there is a guy that use to carry a lot of tubes in Sta. Efigenia 
named Toninho on Rua Aurora or Vitoria.  He might have some good NOS 
tubes.  He might be able to test your tubes as well.

Tomar cuidado ampli valvulados tem voltagem bem alta!!!

Abracos,
Matt


On 11/8/11 6:43 PM, Bruno Castro wrote:
> Thanks guys. Bought the amp in US.But unfortunately I live in Brazil, thus
> I can't take the amp back to its maker!
>
> 2011/11/8 Rick Davis<bluesharpamps@xxxxxxxxx>
>
> > Have you tried contacting the amp maker?  I'm sure he will help.
> >
> > --
> > -Rick Davis
> > The Blues Harp Amps Blog
> > http://www.bluesharpamps.blogspot.com/
> >
> >
> > On Tue, Nov 8, 2011 at 4:26 PM, Bruno Castro<bruno2000@xxxxxxxxx>  wrote:
> >
> > > Hi Guys
> > >
> > > I bought a boutique amp from a famous harp amp's brand and I realized
> > > after
> > > a few days that the amp wouldnt work whenever I cranked the volume up,
> > > seemed like it could be a problem with the rectifier tube. Bought two
> > > rectifier tubes online but haven't been able to test them yet to assure
> > > that this was the problem.
> > >
> > > Has anyone ever had this problem? I've had my amp for less than 15 days
> > > and
> > > already had to go through this! Any tips will be much appreciated.
> > >
> > > Thanks in advance for your help!