Fender Amp question - can't turn it down

with industry Pro, Nick Batzdorf

Moderators: admin, mdc, TAXIstaff

Post Reply
User avatar
anne
Serious Musician
Serious Musician
Posts: 1543
Joined: Fri Jul 14, 2006 11:45 am
Gender: Female
Location: New Mexico
Contact:

Fender Amp question - can't turn it down

Post by anne » Fri May 28, 2010 12:09 pm

I have a fender princeton 112 amp (65 watt single 12" 1 input)
It was in storage over the winter, and I've been playing it for a few weeks.

The volume is either off at 0, or really really loud at 1. It will continue to get louder as you turn it up towards 10, with it maxing out around 8.

I used contact cleaner and made sure there wasn't anything in there that would short it -
before I pull it apart, does anyone have any ideas of what else to do?

Thanks

User avatar
allends
Serious Musician
Serious Musician
Posts: 1707
Joined: Sat Mar 10, 2007 10:14 am
Gender: Male
Location: South Bend, Indiana
Contact:

Re: Fender Amp question - can't turn it down

Post by allends » Fri May 28, 2010 1:46 pm

anne wrote:I have a fender princeton 112 amp (65 watt single 12" 1 input)
It was in storage over the winter, and I've been playing it for a few weeks.

The volume is either off at 0, or really really loud at 1. It will continue to get louder as you turn it up towards 10, with it maxing out around 8.

I used contact cleaner and made sure there wasn't anything in there that would short it -
before I pull it apart, does anyone have any ideas of what else to do?

Thanks
I had an older Peavey amp that did something similar but not quite the same. On that amp the pot needed to be flushed with the stuff you can find at http://www.caig.com . Another amp of mine had big electrical trouble of a different kind. On that one it was an important capacitor in the power stage. I mention this only because it is useful to know that amplifiers with old capacitors don't like being left idle for long periods of storage. The electrolytes get screwed up when not engaged, so it is good to turn the amp on once in a while.

I'm no expert. I've just had problems and had to fix them.

Anyway, you've been playing this amp again for a while so I would suspect the potentiometer, not a capacitor. I hope it's that simple! :) I'd hate to think you need to resolder something that has come loose.

-Allen

ernstinen
Total Pro
Total Pro
Posts: 5658
Joined: Mon Feb 02, 2004 6:59 pm
Gender: Male
Location: Los Angeles
Contact:

Re: Fender Amp question - can't turn it down

Post by ernstinen » Fri May 28, 2010 8:14 pm

Hmmm --- Fender Princetons were 15 watt tube amps. I'm sure you're talking about not a '65 Princeton, but a 65 watt Princeton which is solid state, correct?

In that case, I'd sell it immediately! :mrgreen: Just joking! :lol:

Anne, I don't know. I'm not an expert, but it seems like the volume pot is fried. I doubt any pot cleaner will help. I'd change out the volume pot first, and THEN sell it! ;)

I checked out 15-watt tube Princetons, which are going up to $1000 these days, but solid state ones can be used as a nice anchor for your boat! (Sorry --- in a silly mood!) --- But try exchanging the volume pot first.

Best of luck,

Ern 8-) :)

Len911
Total Pro
Total Pro
Posts: 5351
Joined: Mon Dec 07, 2009 4:13 pm
Gender: Male
Location: Peculiar, MO
Contact:

Re: Fender Amp question - can't turn it down

Post by Len911 » Fri May 28, 2010 8:55 pm

I would agree with Allen and Ern. The volume pot potentiometer, it's probably like a car heater fan, when the resistors go you get off or the fan blows at full speed.

I found a website that sell the potentiometers, but there are probably 50 model numbers, and they are all 7,05 eur or about $8.65.
So that probably gives you an idea of the part price anyway. Looks like there are 4 solder joints to the pcb board.
https://soundcloud.com/huck-sawyer-finn
Not an expert on contemporary music

User avatar
t4mh
Serious Musician
Serious Musician
Posts: 1446
Joined: Wed Nov 26, 2008 4:05 pm
Gender: Male
Location: Indiana
Contact:

Re: Fender Amp question - can't turn it down

Post by t4mh » Sat May 29, 2010 5:06 am

Is this an older tube amp or a newer solid state amp?

Keith
I hear the voice of God in a bending guitar string!
Life is too important to be taken seriously
No electrons were harmed in the construction of this message.
http://www.t4mh.com

Post Reply

Who is online

Users browsing this forum: No registered users and 17 guests