[Hammarlund] HX-50 snapping noise

[Bill Cromwell]

Hi Bob,

I pulled up the schematic on BAMA and looked it over. I see only one 
multisection cap - C-162A and B. Your description can be interpretted 
several ways. apparently that replacement was succesful. So which of 
those last caps was the one that failed? Which caps were the last three 
caps? With that information maybe we can help.

73,

Bill  KU8H


On 07/10/2014 09:13 PM, Robert Sauvan wrote:
> Hi all,
> As many of you might remember, I have been working on my HX-50 
> transmitter. It  all started with a major chirp. In the process I 
> started recapping the rig. Each time I replaced a cap I turned on the 
> rig to be sure all is well. It all worked great up until I got to the 
> last multi-can cap setup.During this process I kept hearing a snapping 
> noise occasionally. I occasionally heard the snapping noise before 
> recapping as well but it wanst real bad, but I knew something was up.I 
> couldnt actually pin point the snapping noise and pretty much was 
> hoping it was one of the electrolytics. It was faint but there. So, I 
> started replacing the last 3 caps one at a time. I was mounting them 
> individually under the chassis and not replacing the multi-cap can 
> because I couldnt find one. The first cap went fine. Was getting the 
> usual output on the rig but I was still hearing the snapping noise. 
> Went to the 2nd cap and then everything went to pot. I fired up the 
> rig and keyed it liked I did on all previous testing but I noticed not 
> quite the output as before and then the rig hummed and blew the fuse. 
> Im sure I have everything hooked up correctly so Im thinking the 
> transformer was what was making the snapping noise previously and now 
> I blew it. Any ideas? Did I trash the thing? I hooked the old 
> electrolytic back up but I think it was too late now since I think I 
> trashed the thing. Any ideas?
>
> Thanks-Bob-W0YBS