[Amps] orphan amp?

[Barry Kirkwood]

I have aViewstar PT2000A.
Have run it very successfully for nearly 10 years. Has also been run by 
guest ops with no problems.
Mainly CW contest work and hamming around.
Bought it second hand.
Problems early on: The plate blocking cap went. Replaced with fatter one, no 
problems since.
The rectifier stack died, probably as result of above, and the power caps 
were sad.
Replaced them with higher capacity and stronger  spec. Again no problems 
since.
Recently hads problems with dirty ant relay contacts. Hard to acess, so took 
plastic box off unit, cleaned contacts, left suspended by its leads (short 
leads, not too bad), again no firther problems and easy service in future.
Note that this amp uses PiL and needs to be tuned precisely into dummy load 
to get correct settings before operation on the bands.
Once ths is done it goes very well.
73
Barry





end
Barry Kirkwood PhD ZL1DD
Signal Hill Homestay
66 Cory Road
Palm Beach
Waiheke Island 1240
NEW ZEALAND
ph/fax 64-9-372-5161
www.waiheke.co.nz/signal.htm
----- Original Message ----- 
From: "George" <gclute at comcast.net>
To: <Amps at contesting.com>
Sent: Friday, October 08, 2004 3:12 AM
Subject: RE: [Amps] orphan amp?


>I have one of the Viewstars on my bench now.  I changed out the TR relay 
>and
> put it on the air...it worked nicely for a while then.  One of the caps
> went.  Changed out the caps, but I told my friend that I was afraid to 
> crank
> it up again, as I just don't want to fix it again.  It sits here gathering
> dust...he bought a QRO and is very happy, and I'm now his storage place.
>
> Geo W7LFD
>
> -----Original Message-----
> From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com]On
> Behalf Of carl seyersdahl
> Sent: Thursday, October 07, 2004 4:24 PM
> To: Amps at contesting.com
> Subject: [Amps] orphan amp?
>
>  Can anyone here identify an amp built by B&W
>    model PT-2500-A ??? A friend of mine has one he got for peanuts, it has
> 2 3-500s , one of which is bad, the meter is bad and who knows what else
> might be wrong, but he needs the manual and all help he can get.!!
>   I will help him as much as I can , but he lives 150 miles from me so it
> isn't easy. Any help will be appreciated.!!
>    carl / kz5ca
>
>
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