[Amps] 91B problem in Paraguay

[DALE LONG]

Thanks Lane and all:

You may be right. The local tech reports a problem in a transformer. Also some scorched board and fried components in what he calls the 160m section.  Thats strange because my host removed his 160m antenna about a year ago and the amp has not operated on 160 for a long time, and only briefly, because this is a city location. I have not seen the inside of the amp, as it was taken to a trusted local tech. It is small consolation that I gave the amp to him as a gift, but I still feel terrible that it busted while I was using it.

Looks like I may need to bring the whole amp to the USA, and leave my friend without it...particularly bad, because he just told my what a major improvement the amp made to his station and referred to his station as "before Alpha" and "after Alpha" because it was so dependable. He hasnt used the Henry in a couple years, so we need to try it again.

But the IC756 only puts out 30 watts on 10m, so cannot drive the Henry.  I was in Russian contest on 10m with only  30 watts. My friend is a SSB man and likes to be loud. Without an amp this station is better on CW.

thanks to all

Dale ZP6/n3bna

--- On Sun, 3/21/10, Zeitler, Lane LT, FST-1 <zeitlel at cpr3.navy.mil> wrote:

From: Zeitler, Lane LT, FST-1 <zeitlel at cpr3.navy.mil>
Subject: RE: [Amps] 91B problem in Paraguay
To: "DALE LONG" <dale.long at prodigy.net>, amps at contesting.com
Date: Sunday, March 21, 2010, 11:11 AM

In the past when I have had similar symptoms it was the plate xmfr shorted. Both of these instances were Henry desktop amps, one a 1KD-5 and the other a 2KD-5. You need to start unloading, ie, unload the secondary of the plate xmfr and see if it still blows fuses.

Lane
Ku7i

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On Behalf Of DALE LONG
Sent: Wednesday, March 17, 2010 8:13 PM
To: amps at contesting.com
Subject: [Amps] 91B problem in Paraguay

Turned on my hosts amp this morning and tripped the 2amp slow-blow fuse...Got more fuses this afternoon and same thing keeps happening.
 
Seemed to shut down normally althought there may have been a problem with a sticky T/R relay before turning off the amp.
 
Any ideas what could be causing the 2 amp fuses to blow when turning on the switch?
 
Thanks
 
Dale ZP6/N3BNA
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