Re: [Harp-L] Re: Amp Maintenance

[IcemanLE@xxxxxxx]

Ron Holmes did a great job of reworking my Princeton when I blew out a  
transformer - Brian Purdy was the one that interceded, took my amp and sent the  
necessary insides to Ron for, what I think were excellent results and not too  
costly.
 
 
In a message dated 1/12/2009 2:03:14 P.M. Eastern Standard Time,  
jimjimdr@xxxxxxxxx writes:

The caps  to consider replacing are the power supply filter caps and
possibly the  cathode bypass caps.  Not all amps of this vintage
require  it.   Do not replace the signal caps unless there has been  a
clear failure.
In a Princeton the filter caps are contained in a  multi-section can.
A suitable replacement can is available at Antique  Electronic Supply
(www.tubesandmore.com).  Sometimes multi-section  cans are replaced
with individual caps, but I favor using a new  multi-section can in a
Princeton as it entails less alteration of a  collectable amp.  The cap
is soldered directly to the chassis and this  takes a big iron- not for
the inexperienced.
The most important  servicing on this amp is to install a grounded line
cord.
Insist that  any replaced parts are returned to you.
Amps have potentially lethal  voltages inside!

Jim R



On Jan 12, 7:15 am, "Jon  Clark" <jdcl...@xxxxxxxxxxx> wrote:
> I have a Blackface Princeton  that has never been maintained as far  as I 
know. I would like to replace  the caps and have little soldering experience. I 
am wondering if anyone has a  recommendation as to (1) what I should be 
looking for in cap replacements, and  (2) is this something I can do myself, and if 
not, who out there in harpland  does that kind of work.
>
> Thanks
>  _______________________________________________
> Harp-L is sponsored by  SPAH,http://www.spah.org
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