Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Pastortom on October 09, 2011, 01:34:21 pm

Title: Fender "Princeton Recording" Attenuator...NEED One.....
Post by: Pastortom on October 09, 2011, 01:34:21 pm

Guys.... I'm coming up with a dead end o a replacement "attenuator" pot for my Princeton Recording amp......it's a cheap one for sure, really flimsy design....shaft is loose (moves in and out and shorts) and is now just shot....... :BangHead:

I've been unable to find one........hate to go through a dealer.........Anyone know this amp and have a connection for this baby?  Need one pronto............ :dontknow:

Title: Re: Fender "Princeton Recording" Attenuator...NEED One.....
Post by: Fresh_Start on October 09, 2011, 03:56:36 pm

http://www.fender.com/support/articles.php?section=downloads&category=amplifier-schematics (http://www.fender.com/support/articles.php?section=downloads&category=amplifier-schematics)

Is your schematic listed there?

Chip

Title: Re: Fender "Princeton Recording" Attenuator...NEED One.....
Post by: FYL on October 09, 2011, 04:13:27 pm

I'm pretty sure this isn't a standard pot, it's probably a pot + switch(es) and/or an encoder - the PRA is basically a dual amp, more or less a toobed PR with a solid state section coupled thru a resistive attenuator controlled by said pot and relays.

No schematics in my files, and no part number for the pot. Your best best would be to contact Fender, ask for the schemo and then try to find the pot as a Fender spare part.

Title: Re: Fender "Princeton Recording" Attenuator...NEED One.....
Post by: Pastortom on October 09, 2011, 04:15:21 pm

Princeton Recording's are not on their list.

The name of this amp is the "Princeton Recording".  Neither do they include a schematic in the owners manual, or a parts list.

It's like tryin' to fix a Maserati at your local Kia dealer I guess.  Everything seems to be a big secret.

This control MUST be out there somewhere........considering the lousy quality of the part, I can't believe I'm the only one who's needed it.  I just can't find it........or any info on it......... :help:

Title: Re: Fender "Princeton Recording" Attenuator...NEED One.....
Post by: Pastortom on October 09, 2011, 04:18:09 pm

Thanks FYL...........   We have a request in to Fender, but so far no response.

I've done this before and they usually just refer it to a service center........I guess at this point I'll take anything I can get.......I'm sure they'll inflate the cost, but it's their prerogative..........

Title: Re: Fender "Princeton Recording" Attenuator...NEED One.....
Post by: phsyconoodler on October 11, 2011, 10:20:56 am

Just call Fender and order one.It's just a small L-Pad anyway.It's not expensive at all.I'll call today and get the part number and price for you.(helps to be a Fender warranty tech:)

Title: Re: Fender "Princeton Recording" Attenuator...NEED One.....
Post by: HotBluePlates on October 11, 2011, 07:31:55 pm

Quote from: phsyconoodler on October 11, 2011, 10:20:56 am

... It's just a small L-Pad anyway. ...

Not according to Patent #6,816,009 (http://www.pat2pdf.org/pat2pdf/foo.pl?number=6816009). I'm thinking FYL was right about it being a rotary encoder.

Title: Re: Fender "Princeton Recording" Attenuator...NEED One.....
Post by: m2dad on July 14, 2012, 12:18:08 am

I have the schematic for the Princeton Recording Amp.  It was hard to find but finally found the right person at Fender to email it to me.  Email me at m2dad yahoo
Gary