Re: {Collins} Problems with KWS-1



Steve:

Thanks for sharing your KWS-1 repair saga, and the “oops” moment you lived through with success!

That is the key, success.

In my opinion, all list members have all had those moments when a repair grows to a big challenge.  We then all try our best to learn more and charge ahead!

Chuck W9KR




> On Oct 20, 2017, at 6:55 PM, Steve Wender via Collins <collins@xxxxxxxxxxxxx> wrote:
> 
> Hi All,
> 
> 
> For the past few weeks my KWS-1 was acting a little strange.Its output power seemed to change by 50-100 watts for no reason.It wasn’t too bad so I lived with it.I was in denial.About a week ago I decided to try to track it down.I first carefully checked the tubes and replaced a few that were weak. Then snap crackle and pop it stopped loading altogether.I still got plate current but the tuning had no effect.Darn- now I had a real problem.It was not easy to work on it where it was so I moved it to my bench.When I looked it over, I noticed that the heavy braid connection on the wiper on L401 had come apart.That didn’t look good.It was not easy to get to and I had to take the back and sides off.I replace the braid with some RG-8 shield and got it back together and tried it.No luck-This time no plate current at all.I hate it when I try to fix things and it gets worse. Then I realized that I forgot to reconnect the HV connector.Believe me the KWS-1 works a lot better with HV.Now all seems to be working.I am hoping that this also solved the power stability problem.
> 
> Great feeling to fix something that is almost 60 year old.
> 
> Thanks,
> 
> Steve KC5WN
> 
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