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Post subject: Re: DRRI Hum!
Posted: Tue Oct 02, 2012 5:28 pm
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"Lead dress" refers to the connecting wires which link various components such as the tube sockets and front-panel controls to the amp's circuit board, and how they are positioned relative to one another and other parts within the chassis. A slight movement of them can often cause hum, hiss, and unwanted oscillations which usually translate to extraneous-and-spurious noise audible through the amp's speaker(s).

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Post subject: Re: DRRI Hum!
Posted: Tue Oct 02, 2012 5:32 pm
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In other words, "Connections".

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Post subject: Re: DRRI Hum!
Posted: Tue Oct 02, 2012 5:51 pm
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Wow! You guys are fantastic!

How would I go about checking all the wires? Would my friend with decent electrical knowledge be able to do it properly? What exactly would we be looking for? Would this involve removing the PCB?

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Post subject: Re: DRRI Hum!
Posted: Tue Oct 02, 2012 7:10 pm
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Penguin_21 wrote:
Would this involve removing the PCB?


That would likely cause even more problems.

Take the amp to someone qualified to work on Fender amps.

I've a got brand-crispy-new C-note that says all of your amp's problems were caused by someone who wasn't.

Arjay

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Post subject: Re: DRRI Hum!
Posted: Wed Oct 03, 2012 1:46 am
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Hou-Tex wrote:
stratele52 wrote:
Hou-Tex wrote:
I'm new to tube amps so my suggestion may be off course. But being an old dude, I would check for connection issues first.


And check lead dress too


I don't know what that is, but I would start with the simple things likes connections. Use some contact cleaner, whatever in the areas you question.


The only thing you can clean is reverb connectors , reverb tank side and amp side.
Lead dress is ;to move some wire to change their position over / near resistors and capacitor. Wire position , if wrong do some noise. I fix a problem like thant in some Fender amps.

IMO and what I understand of you amp problem, you are better to find a good tech . It is not a problem that can be fix by a guitar player and MOST IMPORTANT; there is a lethal voltage in tube amp that can KILL you.


Last edited by stratele52 on Wed Oct 03, 2012 10:58 am, edited 1 time in total.

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Post subject: Re: DRRI Hum!
Posted: Wed Oct 03, 2012 7:10 am
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I will keep all that in mind. I just don't want to get hosed by a tech if it's a simple fix, haha.

I don't know if this helps but when the reverb is turned up and I engage the vibrato, there is a noticeable popping sound. This pop isn't there when I engage the vibrato with the reverb off.

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Post subject: Re: DRRI Hum!
Posted: Wed Oct 03, 2012 10:58 am
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Penguin_21 wrote:
I will keep all that in mind. I just don't want to get hosed by a tech if it's a simple fix, haha.


Sorry but it is not.


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