[Amps] 3-500Z pin comes unsoldered

Larry lknain at nc.rr.com
Tue May 13 16:01:00 EDT 2014


I had a brand new Henry years ago that would melt the solder out of tube 
pins. I got rid of it.  I wondered later if perhaps the problem was too much 
RF etc running around in the box (e.g., bad bypass caps). The amp had a 
distinctive signal on 80M.

73, Larry  W6NWS

-----Original Message----- 
From: Gary Smith
Sent: Tuesday, May 13, 2014 1:33 PM
To: amps at contesting.com
Subject: [Amps] 3-500Z pin comes unsoldered

My dad's PT2500 has a problem where one of the 3-500 pins gets hot
enough it unsolders. I'm going to have a look at it & am thinking
maybe there's a poor connection on that pin/clip but maybe its
something relating to a defective component.

Before I open it up I'd appreciate suggestions on what to
specifically look for that might not be obvious to the eye, might
save me some time reinventing the wheel.

73,

Gary
KA1J


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